Android Studio 2.3 released on 1 March. I recently created a guide to install Xamarin side by side with Android Studio 2.2.3 here.
The steps illustrated remain the same. The only difference is, the Android Studio 2.3 zip file (without sdk and installer) can be located here. If 2.23 was previously installed, migrate the 2.2.3 settings on first run of Android Studio 2.3. This will copy across the shared SDK location with the Xamarin installation.
Happy Xamarin Development!