At Google I/O we announced our plans to add several new capabilities to help developers manage their products more effectively in Android Market. We’re pleased to let you know that the latest of those, multiple APK support, is now available. Multiple APK support is a new publishing option in Android Market for those developers who want extra control over distribution.

Until now, each product listing on Android Market has included a single APK file, a universal payload that is deliverable to all eligible devices — across all platform versions, screen sizes, and chipsets. Broad distribution of a single APK works very well for almost all applications and has the advantage of simplified product maintenance.

With multiple APK support, you can now upload multiple versions of an APK for a single product listing, with each one addressing a different subset of your customers. These APKs are complete, independent APKs that share the same package name, but contain code and resources to target different Android platform versions, screen sizes, or GL texture-compression formats. When users download or purchase your app, Android Market chooses the right APK to deliver based on the characteristics of the device.

When you upload multiple APK files, Android Market handles them as part of a single product listing that aggregates the app details, ratings, and comments across the APKs. All users who browse your app’s details page see the same product with the same description, branding assets, screenshots, video, ratings, and comments. Android Market also aggregates the app’s download statistics, reviews, and billing data across all of the APKs.

Multiple APK support gives you a variety of ways to control app distribution. For example, you could use it to create separate APKs for phones and tablets under the same product listing. You could also use it to take advantage of new APIs or new hardware capabilities without impacting your existing customer base.

To support this new capability, we’ve updated the Developer Console to include controls for uploading and managing APKs in a product listing — we encourage you to take a look. If you’d like to learn more about how multiple APK support works, please read the developer documentation. As always, please feel free to give us feedback on the feature through the Market Help Center.

Earlier this year, we launched several important features aimed at making it easier to find great applications on Android Market on the Web. Today, we're very excited to launch a completely redesigned Android Market client that brings these and other features to phones.

The new Market client is designed to better showcase top apps and games, engage users with an improved UI, and provide a quicker path to downloading or purchasing your products. For developers, the new Android Market client means more opportunities for your products to be merchandised and purchased.

In the home screen, we've created a new promotional page that highlights top content. This page is tiled with colorful graphics that provide instant access to featured apps and games. The page also lets users find their favorite books and movies, which will help drive even more return visits to Market.

To make it fun and easy for users to explore fresh content, we've added our app lists right to the Apps and Games home pages. Users can now quickly flip through these lists by swiping right or left, checking out what other people are downloading in the Top Paid, Top Free, Top Grossing, Top New Paid, Top New Free, and Trending lists. To keep the lists fresh and relevant, we've made them country-specific for many of the top countries.

To help you convert visitors to customers, we’ve made significant changes to the app details page. We've moved the app name and price into a compact action bar at the top of the page, so that users can quickly download or purchase your app. Directly below, users can flip through screen shots by swiping right or left, or scroll down to read your app's description, what's new, reviews, and more. To help you promote your product more effectively, the page now also includes a thumbnail link to your product video which is displayed at full screen when in landscape orientation.

For users who are ready to buy, we've streamlined the click-to-purchase flow so that users can complete a purchase in two clicks from the app details page. During the purchase, users can also see a list of your other apps, to help you cross-sell your other products.

With a great new UI, easy access to app discovery lists, a convenient purchase flow, and more types of content, we believe that the new Market client will become a favorite for users and developers alike.

Watch for the new Market client coming to your phone soon. We've already begun a phased roll-out to phones running Android 2.2 or higher — the update should reach all users worldwide in the coming weeks. We encourage you to try the update as soon as you receive it. Meanwhile, check out the video below for an early look.

As part of our ongoing efforts to provide better tools to help you manage your business, we are introducing merchant sales reporting on Android Market. Developers now have convenient access to monthly reports that detail the financial performance of their applications directly from the Android Market Developer Console.

Based on Google Checkout financial data, these reports provide per-transaction details including additional information such as device information, currency of sale, and currency conversion rate. Developers will be able to easily download these reports as a CSV (comma-separated values) files to enable further analysis at their convenience.

Starting today, developers can download merchant sales reports for March 2011 from the Developer Console. Reports for months going back to January 2010 will be available in the coming weeks. Moving forward, sales reports for each month will be available by the 10th day of the following month.

We hope you’ll find these new sales reports useful. As always, please don’t hesitate to give us feedback through Market Help Center.

[This post is by Eric Chu, Android Developer Ecosystem. —Dirk Dougherty]

Since last year, we’ve been working to bring the convenience of Direct Carrier Billing to more Android Market users on more carrier networks. Building on the launches to T-Mobile US and AT&T users in 2010, we’ve recently launched Direct Carrier Billing to users on three popular networks in Japan -- SoftBank, KDDI, and NTT DOCOMO.

The momentum continues and today we’re excited to announce that Direct Carrier Billing is now available on Sprint. We've begun a phased roll-out of the service that will reach all users in the next few days. When complete, Android users on the Sprint network will be able to charge their Android Market purchases to their Sprint mobile bill with only a few clicks.

We believe that Direct Carrier Billing is a key payment option because it lets users purchase and pay for apps more easily. It’s also important because it offers a convenient way to buy in regions where credit cards are less common.

We are continuing to partner with more carriers around the world to offer carrier billing options to their subscribers. Watch for announcements of new payment options coming in the months ahead.

Today, we're pleased to announce the launch of Android Market In-app Billing to developers and users. As an Android developer, you will now be able to publish apps that use In-app Billing and your users can make purchases from within your apps.

In-app Billing gives you more ways to monetize your apps with try-and-buy, virtual goods, upgrades, and other billing models. If you aren’t yet familiar with In-app Billing, we encourage you to learn more about it.

Several apps launching today are already using the service, including Tap Tap Revenge by Disney Mobile; Comics by ComiXology; Gun Bros, Deer Hunter Challenge HD, and WSOP3 by Glu Mobile; and Dungeon Defenders: FW Deluxe by Trendy Entertainment.

To try In-app Billing in your apps, start with the detailed documentation and complete sample app provided, which show how to implement the service in your app, set up in-app product lists in Android Market, and test your implementation. Also, it’s absolutely essential that you review the security guidelines to make sure your billing implementation is secure.

We look forward to seeing how you’ll use this new service in your apps!

Back in January we announced our plan to introduce Android Market In-app Billing this quarter. We're pleased to let you know that we will be launching In-app Billing next week.

In preparation for the launch, we are opening up Android Market for upload and end-to-end testing of your apps that use In-app Billing. You can now upload your apps to the Developer Console, create a catalog of in-app products, and set prices for them. You can then set up accounts to test in-app purchases. During these test transactions, the In-app Billing service interacts with your app exactly as it will for actual users and live transactions.

Note that although you can upload apps during this test development phase, you won’t be able to actually publish the apps to users until the full launch of the service next week.

To get you started, we’ve updated the developer documentation with information about how to set up product lists and test your in-app products. Also, it is absolutely essential that you review the security guidelines to make sure your billing implementation is secure.

We encourage you start uploading and testing your apps right away.

Following on last week’s announcement of the Android 3.0 Preview SDK, I’d like to share some more good news with you about three important new features on Android Market.

Android Market on the Web

Starting today, we have extended Android Market client from mobile devices to every desktop. Anyone can now easily find and share applications from their favorite browser. Once users select an application they want, it will automatically be downloaded to their Android-powered devices over-the-air.

Android Market on the Web dramatically expands the discoverability of applications through a rich browsing experience, suggestion-guided searching, deep linking, social sharing, and other merchandising features.

We are releasing the initial version of Android Market on the Web in English and will be extending it to other languages in the weeks ahead.

If you have applications published on Android Market, we encourage you to visit the site and review how they are presented. If you need additional information about what assets you should provide, please visit Android Market Help Center.

You can access Android Market on the Web at:

http://market.android.com/

Buyer’s Currency

Android Market lets you sell applications to users in 32 buyer countries around the world. Today we’re introducing Buyer’s Currency to give you more control over how you price your products across those countries. This feature lets you price your applications differently in each market and improves the purchase experience for buyers by showing prices in their home currencies.

We’ll be rolling out Buyer’s Currency in stages, starting with developers in the U.S. and reaching developers in other countries shortly after. We anticipate it will take approximately four months for us to complete this process.

We encourage you to watch for the appearance of new Buyer’s Currency options in the Android Market publishing console and set prices as soon as possible.

In-app Billing

After months of hard work by the Android Market team, I am extremely pleased to announce the arrival of In-app Billing on Android Market. This new service gives developers more ways to monetize their applications through new billing models including try-and-buy, virtual goods, upgrades, and more.

The In-app Billing service manages billing transactions between apps and users, providing a consistent purchasing experience with familiar forms of payment across all apps. At the same time, it gives you full control over how your digital goods are purchased and tracked. You can let Android Market manage and track the purchases for you or you can integrate with your own back-end service to verify and track purchases in the way that's best for your app.

We’ll be launching In-app Billing in stages. Beginning today, we are providing detailed documentation and a sample application to help you get familiar with the service. Over the next few weeks we’ll be rolling out updates to the Android Market client that will enable you to test against the In-app Billing service. Before the end of this quarter, the service will be live for users, to enable you to start monetizing your applications with this new capability. For complete information about the rollout, see the release information in the In-app Billing documentation.

Helping developers merchandise and monetize their products is a top priority for the Android Market team. We will continue to work hard to to make it the best marketplace for your to distribute your products. For now, we hope you’ll check out these new features to help you better deliver your products through Android Market.

Following on last week’s announcement of the Android 3.0 Preview SDK, I’d like to share some more good news with you about three important new features on Android Market.

Android Market on the Web

Starting today, we have extended Android Market client from mobile devices to every desktop. Anyone can now easily find and share applications from their favorite browser. Once users select an application they want, it will automatically be downloaded to their Android-powered devices over-the-air.

Android Market on the Web dramatically expands the discoverability of applications through a rich browsing experience, suggestion-guided searching, deep linking, social sharing, and other merchandising features.

We are releasing the initial version of Android Market on the Web in English and will be extending it to other languages in the weeks ahead.

If you have applications published on Android Market, we encourage you to visit the site and review how they are presented. If you need additional information about what assets you should provide, please visit Android Market Help Center.

You can access Android Market on the Web at:

http://market.android.com/

Buyer’s Currency

Android Market lets you sell applications to users in 32 buyer countries around the world. Today we’re introducing Buyer’s Currency to give you more control over how you price your products across those countries. This feature lets you price your applications differently in each market and improves the purchase experience for buyers by showing prices in their home currencies.

We’ll be rolling out Buyer’s Currency in stages, starting with developers in the U.S. and reaching developers in other countries shortly after. We anticipate it will take approximately four months for us to complete this process.

We encourage you to watch for the appearance of new Buyer’s Currency options in the Android Market publishing console and set prices as soon as possible.

In-app Billing

After months of hard work by the Android Market team, I am extremely pleased to announce the arrival of In-app Billing on Android Market. This new service gives developers more ways to monetize their applications through new billing models including try-and-buy, virtual goods, upgrades, and more.

The In-app Billing service manages billing transactions between apps and users, providing a consistent purchasing experience with familiar forms of payment across all apps. At the same time, it gives you full control over how your digital goods are purchased and tracked. You can let Android Market manage and track the purchases for you or you can integrate with your own back-end service to verify and track purchases in the way that's best for your app.

We’ll be launching In-app Billing in stages. Beginning today, we are providing detailed documentation and a sample application to help you get familiar with the service. Over the next few weeks we’ll be rolling out updates to the Android Market client that will enable you to test against the In-app Billing service. Before the end of this quarter, the service will be live for users, to enable you to start monetizing your applications with this new capability. For complete information about the rollout, see the release information in the In-app Billing documentation.

Helping developers merchandise and monetize their products is a top priority for the Android Market team. We will continue to work hard to to make it the best marketplace for your to distribute your products. For now, we hope you’ll check out these new features to help you better deliver your products through Android Market.

A key to a great purchasing experience is providing users with simple and fast payment methods. The Android Market team has been working hard to deliver more forms of payment to further reduce purchase friction.

Today, I am pleased to announce the availability of AT&T Direct Carrier Billing for Android users on the AT&T network. AT&T Android users can now easily charge their Android Market purchases to their monthly accounts with only a few clicks. With the combination of Android Market’s new app discovery features and a carrier-backed frictionless payment method, users will find it significantly easier to discover and purchase applications of their choice.

We’ve been rolling out Direct Carrier Billing to all AT&T users over the past several days, as part of a general update to the Market service. Also in the update, please watch for the arrival of new features we announced recently, including the 15-minute refund window, dynamic Wallpaper and Widget categories, new 50MB max .apk size, and more. In addition, we’ve added even more categories to make it easier to find great apps in popular categories, such as “Media & Video”, “Music & Audio”, “Business”, “Sports” (in "Games"), and more. If you have one or more published apps on Android Market, please take a look at these new categories and decide if they are more suitable for your products.

We strongly believe carrier billing is a great way to make it easy for users to purchase and pay for applications. In addition to the availability of AT&T and T-Mobile US carrier billing, we’ll continue to partner with more carriers to offer carrier billing options for their subscribers.

2010 has been an awesome year for Android due in large part to your support. We have seen tremendous growth in Android Market both in terms of application volume and quality. In 2011, we remain committed to making Android Market the best mobile application store possible. As always, please don’t hesitate to continue giving us feedback through Market Help Center.

Best wishes for the new year!

The Android Market engineering team has been hard at work on improving the Android Market experience for users and developers. Today, I’m pleased to announce a significant update to the Android Market client. Over the next two weeks, we’ll be rolling out a new Android Market client to all devices running Android 1.6 or higher.

This new Market client introduces important features that improve merchandising of applications, streamline the browse-to-purchase experience, and make it easier for developers to distribute their applications.

With a focus on improving discoverability and merchandising, we’ve introduced a new carousel on the home and category screens. Users can quickly flip through the carousel to view promoted applications and immediately go to the download page for the application they want. Developers have been very active in creating great Widgets and Live Wallpapers. To make it easier for users to find their favorites, we’re introducing two new categories for Widgets and Live Wallpapers. Applications that include Widgets and Wallpapers will be automatically added to those new categories. We’ll also be adding more categories for popular applications and games in the weeks ahead. In addition, the app details page now includes Related content, which makes it easier for users to quickly find apps of similar interest.

To streamline the browse-to-purchase experience, users can now access all the information about an application on a single page without the need to navigate across different tabs. We’re also introducing application content rating to provide users with more information about applications they are interested in. Since most users who request a refund do so within minutes of purchase, we will reduce the refund window on Market to 15 minutes. This change will be largely transparent to buyers, but will help developers manage their businesses more effectively.

To make it easier for developers to distribute and manage their products, we will introduce support for device targeting based on screen sizes and densities, as well as on GL texture compression formats. We are also increasing the maximum size for .apk files on Market to 50MB, to better support richer games.

With this release, we aimed to deliver features that are most requested by users and developers. However, we’re not done yet. We plan to continue to rapidly enhance Android Market for both users and developers and make it the best content distribution service for the Android ecosystem.

Please stay tuned as we continue to deliver new capabilities in the coming weeks and months.