Each version of this integration matches a specific build of Unreal Engine 4. Here is what has changed in the 2019.1.5.7093.1459 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 2019.1.5.7093.1459

• WG-44704 (Switch) Fixed crash when enabling multi-core rendering.
• WG-44792 Prevented unnecessary modifications in DefaultGame.ini.
• WG-44937 Fixed hang when shutting down engine.
• WG-45030 Properly return playing ID in PostAndWaitForEndOfEvent.
• WG-45095 Removed Python warning when cooking.
• WG-45549 (PS4) Changed default value for ACP Batch Buffer Size.