After suffering multiple delays, finally Fedora 18 "Spherical Cow" gets released by their release team. It's the latest release of Fedora that includes several interesting new features such as support of UEFI Secure Boot, new look on anaconda installer, based on Linux Kernel 3.6 (an update to upgrade to Linux Kernel 3.7 is also available), and include most of the latest stable release of Open Source packages in this distribution.
Fedora 18 use GNOME 3.6 as the default, but they provide KDE 4.9 and XFCE 4.10 as an alternative options. It also uses the latest release of Samba 4, which means it can be used to become an active domain controller for an Active Directory. As usual, Fedora is packed with numerous developer's tool, such as Perl, Python, Rails, and many more.
Go get them while it's still hot from the release team :)