Fedora 10 Alpha was delivered in early August and remains the latest development release for this upcoming Cambridge release (aside from those tracking Fedora Rawhide). The next release, Fedora 10 Beta, was previously delayed and was supposed to make it out the door yesterday...
Yeah, I noticed that when I wanted to download its beta release on tuesday... but Fedora 10 still should be a great release, maybe one of the best Fedora releases to date.