Each version of this integration matches a specific build of Unreal Engine 4. Here is what has changed in the 2019.1.4.7065.1430 release of the integration (in addition to upgrading to the new Unreal build).

Note: This integration does not support experimental Unreal Engine 4 features.

Unreal Engine 4.21/4.22/4.23 - Wwise 2019.1.4.7065.1430

• WG-43178 Added preliminary support for Stadia (please contact Audiokinetic support for access).
• WG-44197 Added support for Unreal 4.23.
• WG-44645 Fixed: Unknown listener ID error message printed when playing sounds with rooms and portals.
• WG-44675 Reduced log spam when WAAPI in unavailable.
• WG-44783 Fixed migration of Wwise installation path from project settings to per-user settings.
• WG-44830 Added overload to AK::SoundEngine::RegisterPluginDLL allowing registration of a plug-in in a specific path.