Each version of this integration matches a specific build of Unreal Engine 4. Here is what has changed between the 2017.1.0.6302.628 and the 2017.1.1.6340.673 release of the integration (in addition to upgrading to the new Unreal build).

Unreal Engine 4.15/4.16/4.17 - Wwise 2017.1.1.6340.673

• Added support for Unreal Engine 4.17
• Since Unreal 4.17, the Unreal audio system needs to be disabled on the Xbox One and Switch platforms. Please refer to Frequently Asked Questions for more information.
• WG-34098 (Mac) An AkComponent located at exactly the same position as a volume with an AkRoomComponent will be properly assigned to that room.
• WG-34119 Fixed: Uninitialized listener ID value sent to SpatialAudio API via SetEmitterAuxSendValues.
• WG-34368 Fixed: FAkAudioDevice::PostEventAtLocation does not register game object.
• WG-34388 Fixed: Crash in Editor when resetting RTPC sequence name to default in Level Sequencer.