Moodle have just announced a school demo site for Moodle 2.0 If you want to have a play with Moodle 2 but your organisation has yet to upgrade then you might find this site useful. To take a look you can visit.
They have also created a short introductory video. I have put a copy below. Let me know how you find Moodle 2.0.
To read the official Moodle news about their demo site just follow this link