Fedora 15 was released yesterday. The most noticeable change is the new Gnome 3 UI, which "brings the first major overhaul of the GNOME user experience in 10 years". Some of the changes might take some time to get used to, and adjust, and the release notes covers some of the details for desktop users. Judging from an alpha release, and the screen shoots, it is disappointing that they have jumped on the fashion bandwagon and added a black status bar. I'm sure it can be customized though, so I will come back to that later.
Other major changes and updates include Firefox 4 with its improved HTML 5 support, systemd boot and init optimized for SSD drives, and also worth noticing Indic, a predictive input typing booster, for "the ibus platform. It suggests complete words based on partial input."