Each version of this integration matches a specific build of Unreal Engine. Here is what has changed in the 2023.1.9 release of the integration (in addition to upgrading to the new Unreal build).

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

Note: This integration was compiled against Unreal Engine versions 5.3, 5.4, and 5.5. It was tested against Unreal Engine 5.5.

Platform-specific information can be found here:

For earlier versions, please refer to Previous Release Notes.

• New Features
• Performance Changes
• Bug Fixes
• Fixes for Community-Reported Bugs

New Features

• WG-75148 Added official support for Unreal Engine 5.5.

Performance Changes

• WG-74873 AkAudio no longer blocks in UAkAudioType::FinishDestroy() while waiting for SoundBanks to unload.

Bug Fixes

• WG-74508 Fixed: (Spatial Audio) Crash when opening surface editor on a SurfaceReflectorSetComponent after changing to a brush with fewer surfaces.
• WG-74607 Fixed: Changing any property while playing in editor stops playing sounds.
• WG-74678 Fixed: Unreal crash on exit after manipulating an Ak Late Reverb component.
• WG-74810 Fixed: Compilation fails with Unreal 4.27.

Fixes for Community-Reported Bugs

• WG-70258 Fixed: Motion plug-in does not recognize controllers if no controllers are connected at initialization.
• WG-73333 Fixed: Portals are displayed as disabled in Unreal Editor even when they are placed correctly.
• WG-74523 Fixed: Crash on FileCache deletion when PackagedFile requested a cancel on the same thread. Followed UE5 recommendation to delete on game thread.
• WG-74537 Fixed: Random noise sometimes occurs when stopping an Audio Input.
• WG-74575 Fixed: Renamed Sound Voice Events appear as "UAsset Missing" in the Wwise Browser.
• WG-74692 Fixed: Possible crash when generating SoundBanks from Wwise Authoring.