Fedora 18 released

The reason F17 doesn't have a 3.7 kernel just yet is that we don't want f17 to have a later kernel than what is available in f18 at release. f18 development was close to freeze when 3.7 was released so we didn't want to release with a 3.7 kernel on media. 3.7.2 is available as a zero day update to f18 and I believe it will be coming to f17 soon. And rawhide is on 3.8 kernels now.