https://www.gamespot.com/articles/sonic-mania-plus-release-date-announced/1100-6458505/

Sonic Mania Plus is coming on July 17, Sega has announced. A new trailer dropped the release date along with some nifty animation and new gameplay footage that includes the two new playable characters, Mighty and Ray.

Mania Plus is an updated edition of a digital release from last year for PlayStation 4, Xbox One, and Nintendo Switch. The physical version includes holographic packaging, a 32-page art book, and a reversible cover that gives it Sega Genesis-style cover packaging. In-game, Sonic Mania Plus adds an Encore Mode and an expanded four-player competition mode, along with the two new characters.