Each version of this integration matches a specific build of Unreal Engine 4. Here is what has changed between the 2018.1.0.6714.1065 and the 2018.1.1.6727.1082 release of the integration (in addition to upgrading to the new Unreal build).

Unreal Engine 4.19/4.20 - Wwise 2018.1.1.6727.1082

• WG-32970 (Xbox One) Removed warnings when building.
• WG-38486 Fixed: Crash when removing an always-loaded level that uses AkRoomComponents and/or AkLateReverbComponents.
• WG-38741 Fixed: Hang on initialization due to some critical sections being initialized before AK::SoundEngine::Init.
• WG-38805 Corrected Integration to unregister all global callbacks after terminating sound engine.
• WG-39228 Fixed: WAAPI crash when closing Wwise Authoring and Unreal editor simultaneously.