Developer Preview 4 now available, official Android O coming soon!

. Take this opportunity to wrap up your testing and publish your
updates soon, to give users a smooth transition to Android O.

If you have a device that's enrolled in the to enroll and get the update.

Watch for more information on the official Android O release soon!

What's in this update?

Developer Preview 4 is a release candidate build of Android O that you can use
to complete your development and testing in time for the upcoming official
release. It includes the final system behaviors, the latest bug fixes and
optimizations, and the final APIs (API level 26) already available since
that includes new features like Android Test Orchestrator, Multiprocess
Espresso, and more. Watch for details coming soon.

Test your apps on Android O

Today's Developer Preview 4 system images give you an excellent way to test your
current apps on the near-final version of Android O. By testing now, you can
make sure your app offers the experience you want as users start to upgrade to
the official Android O platform.

Just enroll a supported device in the properly -- in particular, pay attention to , and changes in ,
and and , ,
and others. These features could also help increase engagement with your app as
more users upgrade to Android O over time.

Enhancing your apps with Android O features can help you drive engagement with
users, offer new interactions, give them more control and security, and improve
performance. Features like , and and other important to learn about all of the new features and APIs and how to
build them into your apps.

Speed your development with Android Studio

When you're ready to build for Android O, we recommend updating to the latest
version of . Aside from improved app , and Gradle build optimizations, Android Studio 3.0
makes it easier to develop with , .

We also recommend updating to the stable version of the , and to the latest SDK, tools, and emulator system images,
available over the next few days.

You can update your project's compileSdkVersion to API 26 to compile against the
official Android O APIs. We also recommend updating your app's targetSdkVersion
to API 26 to opt-in and test your app with Android O specific for details on how to setup your environment to build with Android O.

Publish your updates to Google Play

Google Play is open for apps compiled against or targeting API 26. When you're
ready, you can publish your APK updates in your alpha, beta, or production
channels.

Make sure that your updated app runs well on Android O as well as older
versions. We recommend using and opt-in your eligible
phone or tablet. As always, you can also download and , we love it!