The OS updates are coming fast and furious these days, and the latest off the block is Fedora 9 Sulphur. Improvements include better KDE Desktop 4.0.3, better Bluetooth support, a revised Anaconda system installer, support for persistent Live USB key installations, and lots more.

Source- http://www.engadget.com/2008/05/13/fedora-9-sulphur-makes-its-way-into-the-world/