cobbler and mcollective have been included, which will make provisioning servers easier.
PowerNap 2.0 uses a new method to reduce power consumption and can now monitor user activity (Console, Mouse, Keyboard), system activity (load, processors, process IO), and network activity (wake-on-lan, udp ports tcp ports)
Default dhcpd server updated from dhcp3 to isc-dhcp (version 4).
Eucalyptus is now the latest stable point release (2.0.2) with security and efficiency fixes.
OpenStack (nova) in Universe is a technology preview, with a recent snapshot of 2011.2 (Cactus) release.