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

Unreal Engine 4.15/4.16 - Wwise 2017.1.0.6302.628

• Added Spatial Audio components. See Spatial Audio Objects for more information.
• WG-32095: Added support for Visual Studio 2017
• WG-32388 Fixed: Properly parse Max attenuation radius when generating SoundBanks.