If you are a Fedora user, today is the day to upgrade, following the release of Fedora 10 which was made available today. The latest release adds a significant amount of features to the desktop distro, ranging from better out of the box webcam and printer support, more automated wireless connection sharing, improved boot times, full support for the Sugar desktop and more. They've also included OpenOffice 3.0 in this release, a great boon to just about any desktop user.
Ubuntu has proven to be wildly successful as a stock desktop Linux choice, which has sometimes come at the expense of other distros. Fedora is one of them, though that isn't necessarily a bad thing. As the popularity for any desktop distribution rises, the speed of development and feature-adding of others increases, which usually benefits everyone.