We were caught off guard by the 4.0 patch. Haavok is out of town. I have not been playing games the last several weeks, since I'm busy on other projects. My son plays Wow, but has not for the last few days, so we had no idea there was a patch until I got that email today and thought he meant Cataclysm. I ran WoW and the update started saying "4.01". Needless to say I was surprised!
There will be a Carbonite update.
I will be working on fixing immediate 4.0 issues tonight/tomorrow. Don't know how long that will take. Still trying to get our computers patched up. Son's is having errors...