We've just released Android Studio 0.2.8. This release contains the following improvements:

• IDE
• Updated the IDE base to the IntelliJ EAP build #132.106 sources. The release notes for this version of the IDE are here: http://confluence.jetbrains.com/display/IDEADEV/IntelliJ+IDEA+13+132.106+Release+Notes.
• Lint
• Lint is now properly supported in the IDE. In particular, it now understands library dependencies, such that you for example will no longer get warnings from third party libraries, e.g. unused resources in the appcompat library:
  
  
• Several lint checks were tweaked: it no longer complains about missing CREATOR fields in interfaces, the API check handles nested conditionals for SDK_INT checks, and the Handler leak check no longer flags handlers using specific loopers
• Gradle Integration
• The project structure dialog now shows custom content for Gradle projects. In particular, there is a new panel where you can choose a single installation home for your Android SDK; you no longer need to go and create individual SDK instances for each build target:
  
  
  We plan to add additional panels here where you can edit your Gradle project structure graphically, but for now you still need to edit your Gradle files manually.
  We've also hidden panels that do not apply since information edited there is thrown away during model syncing with the Gradle files.
• Removed actions from the Build menu that do not apply in Gradle projects (such as Generate Ant Build.)
• Importing Gradle projects now intercepts attempts to import the directory rather than the build.gradle file, which in earlier versions would use the wrong type of import. Similarly, we detect attempts to directly import projects from ADT and suggests exporting as a Gradle project from Eclipse first
• Support for features in the next version of the Android plugin (not yet released), such as importing projects with unresolved dependencies, supporting a compile-only action, etc
• Fix misc bugs, such as layout render error mesage handling for DatePicker, a bug which caused adding missing sizes to replace @dimen sizes, and the XML source editor bug where it would incorrectly warn about "Fix "Namespace '' not bound".

If you are already running Android Studio, just restart it, or manually check for updates via Help > Check for Update... (on OSX, look in the Android Studio menu).  This will download and install a small patch rather than download a full IDE image. We are not posting full installers for each weekly update. If you do not already have Android Studio, install the latest full install from http://developer.android.com/sdk/installing/studio.html#download . When you run that version, it will check for updates and upgrade itself via the patch mechanism.