I kinda pulled away from the whole Sonic scene aside from a few fan projects like TMOM (mainly bc the fandom can produce better content than the games and comics consistently) and got wrapped up in a whole myriad of other games (i.e Team Fortress 2, Payday 2, Undertale, etc) on Steam.
The last Sonic game I was truly stoked for was Generations, but I may be interested in Forces if it keeps a good level of quality and I can get either on PC or PS4.