Coming from the official Sonic twitter, Aaron and the Sonic team announced that The Xbox, PS3, and Switch versions of Sonic Mania will still release on August 15th. The PC version, however, will release on August 29th.
As a token of appreciation for Sonic fans on PC who purchased the collector’s edition, or pre purchased through Steam, you will receive Sonic 1 for free on August 15th. If you already own that game, you will get another one to give to a friend.
Hopefully, this isn’t going to make any Sonic stans cry. This is pretty much the standard for multiplatform games that come out on PC as well, so I’m not too worried.
Sonic Mania arrives on PS4, XB1, and Nintendo Switch August 15th! The PC version has moved to August 29th – here's a letter from our team! pic.twitter.com/ZKLwWteezm
— Sonic the Hedgehog (@sonic_hedgehog) August 11, 2017