Each version of this integration matches a specific build of Unreal Engine 4. Here is what has changed between the 2017.1.1.6340.673 and the 2017.1.2.6361.696 release of the integration (in addition to upgrading to the new Unreal build).

Unreal Engine 4.15/4.16/4.17 - Wwise 2017.1.2.6361.696

• WG-32413 Fixed: Cannot hear sounds in the Content Browser and the Animation Editor.
• WG-33970 Fixed: (Mac) Crash when running game with PAK files.
• WG-34030 Fixed: Properly update the details panel when a surface is removed from an AkSpatialAudioVolume.
• WG-34083 Fixed: Refresh issue when changing a Spatial Audio Volume's geometry properties.
• WG-34213 Fixed: Sounds can now be heard from the Content Browser and the Animation Editor.
• WG-34222 Virtual Acoustics factory ShareSets now appear in the Wwise Picker.
• WG-34276 Added ability to allow posted Events to continue playing past their associated sections within Level Sequences.
• WG-34605 Fixed: Portals are not pushed to Wwise Spatial Audio when starting a game, in some circumstances.
• WG-34630 Fixed: Crash when -nosound option is enabled.
• WG-34703 Fixed: Prevent crash when modifying multiple SpatialAudioVolumes at the same time.
• WG-34704 Fixed: Prevent crash when unregistering an AkComponent that is a default listener.
• WG-34745 Fixed: Reduced lower engine memory pool size.