"All good things must come to an end", as they say. I'm very grateful to Cameron Kaiser for all his work, which has undoubtedly been a major part of keeping PPC alive, especially when he has way more important stuff to do than make a browser for old computers. As others have said, current browser support on an OS released in 2005, especially one where official support is dropped quickly, is a pretty good run. I'm glad that we'll see a Classila update and hopefully that will be a help to the people here working on a revised version.
I'm sure TFF will be somewhat usable for quite a while, much older browsers still kinda work on plenty of sites but a lot just won't load or are super broken. Darn SSL.

I hate to be all 'doom and gloom' but IMO this is unfortunately more or less the end of PPC as a viable platform for 'real work' especially with everything moving to web-based platforms. It was already starting to decline as sites got heavier and heavier but after a while it won't just be slow, it'll be unusable. That said, PPC is always fun to play with and get nostalgia value out of and I'm sure the community will stick around for those reasons.