A Sonic Game is coming in 2017, Announcement for Anniversary game on July 22nd
It says: Sonic 2017 Project Startup (Thanks OEG1) via Sonic’s 25th anniversary Joypolis Party event in Japan.
Stay tuned for San Diego’s big Sonic game announcement and party on Friday, July 22nd 2016!
Update: We don’t know yet but apparently it is a separate project from the major Anniversary title.