Each version of this integration matches a specific build of Unreal Engine 4. Here is what has changed in the 2016.1.0 release of the integration (in addition to upgrading to the new Unreal build).

Unreal Engine 4.11.2 - Wwise 2016.1

• Added support for UE4.12
• WG-29917 Fixed: Fixed a case where the attenuation radius of AkAmbientSounds did not show up in the Editor window.
• WG-30000 Fixed: Changed meta properties of StartAllAmbientSounds and StopAllAmbientSounds.
• WG-30012 Fixed: Show project supported platforms as "Available Platforms" in the "Generate Sound Banks" window.
• WG-30014 Fixed: Fixed a crash when starting a Play in Editor session that uses a dedicated server.
• WG-30031 Fixed: Removed usage of the World global pointer.
• WG-30205 Fixed: On the Mac platform, the Wwise.app path may now contain spaces.