Each version of this integration matches a specific build of Unreal Engine 4. Here is what has changed in the 2021.1.4.7707.2130 release of the integration (in addition to upgrading to the new Unreal build).

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

Note: This integration compiles against Unreal Engine versions 4.23 and up, but was only tested against Unreal Engine 4.26.

For earlier versions, please refer to Previous Release Notes.

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

New Features

• WG-29814 Added support for offline rendering.
• WG-55847 Added a new module to the Unreal plugin: AkAudioMixer, which allows outputing Unreal Audio Mixer output to a Wwise Audio Input source. Added a new input component to the Unreal plugin: AkSubmixInputComponent, which enables using an Unreal submix as a Wwise Audio Input source.
• WG-56104 Added a custom section in the AkGeometry Details Panel to control the surface property overrides.
• WG-56197 Exposed the offline rendering SDK functions in AkAudioDevice.

API Changes

• WG-55479 Exposed the offline rendering SDK functions in AkAudioDevice.

Bug Fixes

• WG-52933 Fixed: Possible crash when replacing renamed Wwise UAssets with Automatic Asset Synchronization turned off.
• WG-54119 Fixed: Acoustic textures are assigned to incorrect faces in Spatial Audio Volumes after editing the brush geometry.
• WG-54524 Fixed: "Ensure condition failed" error during Sound Data generation.
• WG-55714 Fixed: Reading bad memory in Spatial Audio when UE4 is used under address sanitizer.
• WG-55920 Fixed: Non-zero values appear in the Transform property for AkPortalComponent, AkRoomComponent, AkLateReverbComponent, and AkGeometryComponent.
• WG-55941 Fixed: Incorrect room orientations in AkRoomComponent.

Fixes for Community-Reported Bugs

• WG-51494 Fixed: Possible crash if AutoSaves are triggered during Sound Data generation. AutoSave is now toggled off during the generation process.
• WG-54995 Fixed: FAkMixerPlatform::GetOutputDeviceInfo does not properly initialize the requested channel information.
• WG-55312 Fixed: RecursionNotAllowed error caused by media being loaded before the AkAudio module has been initialized.
• WG-55548 Fixed: Collision geometry from AkGeometryComponent arranged incorrectly.
• WG-55715 Fixed: Media can be unset in the Sound Engine in the edge case where media asset destruction happens after construction during level transitions.
  
• WG-55966 Fixed: Crash caused by convolution reverb media being freed too early during unloading.
• WG-56058 Fixed: Missing category on UAkLateReverbComponent UPROPERTY prevents the engine plugin from building.
• WG-56139 Fixed: Potential deadlock during sound data generation when parsing SoundBank asset data.