mmmmmmm imagine the Ghash's, but there more likely to use it for cracking pgp and truecrypt
Since they will just have a lot of parrallel processing power, and have not discovered any real vulnerability in those protocols, it seems it will be enough for truecrypt and gpg users to double they maximum key size and be done with it. As I understand it, the difficulty to crack them increases exponentially with longer keys.
I use 4096 bits for everything, so I'm fine.
Using larger key sizes won't really do any difference unless your password also has double the entropy. We're slowly reaching a point where humans are having trouble remembering pass phrases with sufficient entropy (we're not there yet though!).