Update: Facebook already release for iOS 6 (Xcode 4.5)
Today , iOS 6 release and I updated my phone. However, I couldn’t run the project that is using facebook iOS SDK. I found , new Xcode 4.5 have include armv7s Architectures. However, facebook iOS SDK didn’t include this Architectures. So, we need to built our self.
Download facebook source code from https://github.com/facebook/facebook-ios-sdk .