Since I would probably just copy paste my original post here, better go read the original news post on ModDB:
ModDB News Post with FAQ, Troubleshooting, and Credits included
Torrent of the mod.
Feel free to use this thread for all your needs, I hope the extended post will help clear any other doubts people had.
As for post release stuff, I will quote myself:
Since obviously archiving this stuff is in the best spirit of what Retro is about, I will post those on this thread later on.
For bugfixes, we'll probably push a patch in the online updater later when we got some more issues reported after some days.
As for post-release content, there's no plans for me yet due to how busy I will be for the rest of the year with college. We have some cleaning/organization/archival to do of the whole thing first. There's some stuff coming for SonicGLvl first though!
Hope you guys had fun with our work after all this time! I'm really thankful to all the people in the credits sections for helping this become a reali-
Yes, even him.
EDIT: I just remembered Retro has a section for hacks in the Wiki, but I suck at wikis. So if anyone wants to do a page, go ahead.
EDIT2: Also realized I forgot to credit MM for his work on the Archive editor. Sorry!