The originator of Classic Shell has discontinued updates. He hopes someone else will step up and take it over. [Some Firefox extensions have been saved that way — other programmers taking over to continue updating them.]
I have not heard/read whether some other programmer will take up Classic Shell. Apparently, MS is removing some of the coding that allows 3rd party software like Classic Shell to work.
That's MSFT. Take a swell product like CS and figure a way to frig it up.
I'm a big lover of Classic Shell. A bunch of my Win 7 stuff looks like XP due to CS. Something I have to constantly remind myself when helping a fellow Win 7 user on the phone.
Win 7 users, we are legion :)