No legal expert myself either, but if fair use is a valid reason, I reckon Epic would still (sensibly) play it safe there, and not release - it's a pity alright though, as would be good to see the old engines released.
Still though, at least you get the
latest engine full-source!

Ya iD were very good with this alright.
After the utter clusterfuck that was GameSpy shutting down recently (I spent Summer before last, coding a new UT3 master server, reverse-engineered the - horrible - GameSpy protocol); after that, I think Epic are going to be a lot more reluctant to rely on third-party protocols/services, where avoidable (and especially, where they bring licensing restrictions...)
Ya, encryption's on the list, and I'm working right in that area of the code myself, so will likely be the one reviewing it for security issues too (along with Luigi) - when though? No idea

Lots of backlog to work through there.
Happy holidays, and happy new year soon!
