We've just updated this test site to beta 5. This should be our last beta release before we start working on an actual release candidate.
This beta release includes the upgrade script that will verify that you've uploaded all of the proper scripts/templates, it will also make sure your language files have been updated. If your language files are writeable by the webserver it will actually change all of the language strings for you or add any new ones. This way if you've modified your language strings it will only modify those that have actually been changed since the last release. The last step is where it will actually update your database to the current version.
We should have this available in the members area for download early next week.
