Like Fedora 13, Fedora 14, the latest version of Fedora, has support for btrfs. However, it is not enabled out of the box, that is, it is not available as a File System Type option, if you did not edit the boot method to include btrfs. This post offers a very simple guide on how to pass the btrfs option to Fedora 14. Note that to enable btrfs, you will have to use the DVD installation image or the bfo image. This tutorial covers how to enable btrfs when trying to install from a DVD installation image.