Each version of this integration matches a specific build of Unreal Engine 4. Here is what has changed between the 2016.2.4.6098.451 and the 2016.2.5.6121.471 release of the integration (in addition to upgrading to the new Unreal build).

Unreal Engine 4.12/4.13/4.14/4.15/4.16 - Wwise 2016.2.5.6121.471

• WG-32388 Fixed: Max Attenuation does not update Events that call Switches.
• WG-32554 Fixed: Crash with AkComponent::UpdateGameObjectPosition when cooking Unreal project.