There is a new Android Studio update: https://sites.google.com/a/android.com/tools/recent/androidstudio030released
The link says:
The improved per
Old question but just in case someone runs into the same issue I had with upgrading.
If you have setup gradle for offline mode, it doesn't update the wrapper properly. Turning off offline mode (Preferences->Gradle->Offline work) then clean/rebuild pulled in the new gradle version. This assumes that gradle-wrapper.properties file has been updated.