Fedora Linux distros don’t have a particularly long shelf-life. As a fast moving distro, the project doesn’t have a long term support policy.
With Fedora 15 now out, the Fedora Project is closing the door Fedora 13.
“Fedora 13 will reach end of life on 2011-06-24, and no further updates will be pushed out after that time,” Fedora developers, Kevin Fenzi wrote in a mailing list posting. “Additionally, with the recent release of Fedora 15, no new packages will be added to the Fedora 13 collection.”
Fedora 13 was a notable release for several reasons.
The Fedora 13 release included a feature called System Rollback with Btrfs, which enables filesystem snapshots. Somewhat coincidentally, the next major release of Fedora, Fedora 16 is now scheduled to include Btrfs as the default filesystem. That’s right from tech preview to default in three releases (roughly 18 months)