Moodle 1.5 Beta is now available from our download page, containing months of new features and fixes since the venerable Moodle 1.4 series. The download package is re-built daily.
Please note the Beta means that this package is still a TEST release, and not recommended yet for serious production servers.
We are hoping that people will help us polish this release by submitting bugs and fixes to our bug tracker so the final release of Moodle 1.5 is as solid as we can make it. Of course, this process goes on all the time, but the Beta status indicates that all the functionality should be complete and that even casual testers should have no problems installing it.
The final release is expected in two weeks.