At Sonic the Hedgehog’s 25th anniversary party a new Sonic game was finally unveiled! This game is called Sonic Mania and it seems to be a remix of past Sonic games and entirely new levels, made by Christian Whitehead aka Taxman, and Stealth.
Sonic, Tails, and Knuckles are all playable and the game comes out in early 2017. It was playable at the Sonic the Hedgehog 25th anniversary event, and will be playable at the upcoming Summer of Sonic. We will update this post when we have more info, in the meantime, enjoy the trailer!