In accordance with this discussion:
https://groups.google.com/forum/#!topic/adt-dev/C_Gc6hVkig0
We just need to wait for version 1.0, which is due to appear in December.
UPDATE
On the IntelliJ IDEA faq page :
If I rely on features only available in IntelliJ IDEA Ultimate (e.g. additional plugins for version control), can I use Android Studio?
No, these additional features will not be available in Android Studio. You must continue to use IntelliJ IDEA Ultimate.
Fortunately, all the features of Android Studio can be found in IntelliJ IDEA.
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