A bunch have been updated this week and last. Although I just logged in fine with 4 of them that needed updating, although these 4 usually never cause an issue.
Enjoy the game, life is what you really want to be worried about.
PakKat "Everything was going well, until I died"
Gary Gravestink "I am glad you died, I needed the help"
I've got the same problem, either during the character login the game crashes, or immediately after login the game freezes and crashes..... worked fine yesterday! I also deleted all my addons and repaired the game no help.
Playing the game with the 32-bit client worked perfectly for me, while I still crash using the 64-bit client. I'd recommend doing that until there is a fix.