Xamarin just pushed 3.9 to the stable channel. I’d recommend everyone doing Xamarin work update to this. The most important updates are:

  1. Support for creating 64-bit iOS apps. This uses the new “Xamarin.iOS Unified” profile. The existing profile has been deprecated but will remain for legacy enterprise-only apps. As of Feb 1, Apple will require new apps to be 64-bit and as of June 1, updates to existing apps must be 64-bit.
  2. Support for Visual Studio 2015 Preview. For those of you using the VS 2015 preview, Xamarin 3.9 supports it.
  3. Visual Studio Android Emulator support. The VS Android emulator uses Hyper-V, so it’s fast and also works if you had to enable HyperV for any other reason and thus can’t use Genymotion or other ring 0-based virtualization.