Fedora 15 Lovelock Alpha Arrives
The features mentioned in the Alpha announcement is integration of the GNOME 3.0 desktop, systemd makes its full-on debut, cloud server virtualization improvements, updated compilers (Fedora 15 was even built off GCC 4.6), consistent network device naming, dynamic firewall support, DNSSEC for workstations, improved power management, new business management tools, and new package suite groups.
More information on the features to be found in Fedora 15 can be found on the Fedora Wiki. The release notes for Fedora 15 Alpha are also on the wiki.
Succeeding the Fedora 15 Alpha will be a beta release in mid-April and then the final Fedora 15 release on 17 May, assuming it's not delayed.