The game was announced at Sega’s 25th anniversary of the series at San Diego Comic-Con on July 22, 2016, where it was announced alongside Sonic Mania. The game will be developed by Sonic Team, the same team that had previously developed Sonic Colors and Sonic Generations, and will be headed by Sonic series veteran Takashi Iizuka. The presence of both Classic and Modern Sonic lead some journalists to believe it was a Sonic Generations 2, but Iizuka confirmed that it was not a sequel, but a new, stand-alone title. The game will be released for Microsoft Windows, Nintendo Switch, PlayStation 4, and Xbox One in late 2017. Along with development, a new character and gameplay component was announced.
According to Endgadget, this will be a completely new character and not just a new version of the popular hedgehog. The Sonic Team also confirmed that Sonic fans can expect both a “modern” and “classic” Sonic to make an appearance in the “Project Sonic 2017” game.
“Project Sonic 2017” has a lot of similarities with the 2011 Sonic title “Sonic Generations,” but the upcoming standalone game is a completely original story and not a sequel. Game veteran added that there will be other new features added on top of the classic and modern stages shown in the recent game trailer.
On the “Project Sonic 2017” teaser reveals that aside from Sonic running around, there was another blue blur character beside him and look exactly like him. Fans believe that this new companion may be another speedy hedgehog. No further details about the new features and characters are released by SEGA to public. Maybe, SEGA wants to surprise fans when this “Project Sonic 2017” released.