This version comes with upstart. It is an event-based replacement for the /sbin/init daemon which handles starting of tasks and services during boot, stopping them during shutdown and supervising them while the system is running.
In short upstart is much faster as compare to old init.
New version has following cutting edge softwares:
=> Gnome 2.16
=> Firefox 2.0
=> Evolution 2.8.0 and other stuff etc
=> See the complete release note here