So Sega had there Sonic 25th Anniversary live stream a few hours ago, and while most of the event was kinda boring, (at least if you're at home watching anyway), a few cool things where announced.
First up is Sonic Mania, a 2D Sonic inspired by the original games and developed by the same team that ported Sonic 1, 2 and CD to Mobile. The game is coming to X1 and PS4 early next year.
The Second, was the announcement of Project Sonic 2017. The next 3D Sonic from Sonic Team, and inspired by Colors and Generations. The game is coming to PS4, X1, PC and NX holiday 2017.