The German version of Amazon is currently listing a PC version of WWE 2K16 and according to GameLaden.com, where the game is listed at a price point of €32, the game is set to be released on PC on December 31st.
The game is currently listed at €49.95 on Amazon and according to the listing it will be available for Windows Vista, Windows 7 and Windows 8.
However it’s worth noting that 2K still has yet to make any sort of official announcement regarding a PC release for WWE 2K16.