Where can I find the new rules of the Classic League schemes? Seems like the page here does not list the schemes with updated descriptions.

Also, I am not certain about any of the rules pages either, including game number limitations, required number of games to qualify for Playoffs and now that I think about it, all the other criterias for that. I really haven't been following what was going on around here so if someone could point me to a relevant topic I'd be grateful.

just give up at new rules and use old ones xD

I think you're trying to find this:
https://www.tus-wa.com/forums/announcements/experimental-season-result-21097/

We've had some schemes updated, not much in the rules.