SEGA will talk about the new projects on Sonic in an event in march
In the course of the event will be shared new information regarding the Project Sonic 2017 and Sonic Mania. The official description of the event reads:
Dive into the world of Sonic the Hedgehog in this exclusive behind-the-scenes of Sonic Mania, and the next Sonic 2017!
In the company of Takashi Iizuka, and other presenters of SEGA, this panel will respond to questions regarding both titles, will reveal new information and will discuss the rebirth of Sonic in the world of gaming.
Source: Gematsu (gematsu.com)