Paul W. Frields announced the release of Fedora 13.
The email there is quite comprehensive, so please take a look at it. Otherwise you can read the release notes in 1 page.
I have not had much time to spend with F13 in the beta period, but from what I have used, I’m quite pleased at how many things work with little to no effort. I encourage the upgrade.
(Note: I have not published any guides/information for this release yet. This will happen in the next few days. Most of the Fedora 12 information applies.)