Board Thread:Questions and Answers/@comment-30300307-20170426071235/@comment-679780-20170428085539

I disagree. There are many fans who think that chunks of SOnic's past should be retconned, such as removing SUper Tails, Super Knuckles and Hyper Sonic, Classic characters that are no longer used or go as far as removing Angel Island entirely since Knuckles shows up in most of Sonic's games.

I just disagree. Yes those super forms are no longer used but I see no evidence to say they're unavailable for any reason. The Chaos Emeralds perhaps become the Super Emeralds under very specific conditions or something.

I just think there is just the one timeline (and a sub-timeline for certain handhelds and spin-offs).

Sonic Forces may end up with a Flashpoint Paradox, but thats neither confirmed or denied at the moment.