A few notes on this release,
- it addresses several large bugs/issues that were still apparent in Preview Release 1
- Hub interface improvements*
- additional help documentation has been added
This is the 2nd preview release of Moodle 2.0 and as many as (or perhaps more than) eight will be released prior to the stable release this summer. So, in other words Moodle 2.0 is 25% complete and ready for use.
More Moodle 2.0 coverage at Moodle News: http://lmspulse.com/tag/2-0/
*The Moodle Community hub is one of the most important aspects of Moodle 2.0 as it is the nascent course sharing apparatus for Moodle users.