Fedora 20 is the Red Hat community's latest distribution update to end 2013. Fedora 20 delivers on first-class ARM architecture support, many virtualization improvements, new developer features, the GNOME 3.10 and KDE 4.11 desktops, and a whole lot of updated software packages.
For more details on Fedora 20 check out the many articles and benchmarks already done of F20 Heisenbug on Phoronix. Additional details on Fedora 20 Linux can be found out from the Red Hat press release and mailing list announcement. In related news, last week Red Hat released RHEL 7 Beta, which looks great and is performing great.