This beta refresh addresses some of the bugs mentioned in the release notes and some other bugs reported through Connect. There are no new features added to this beta refresh.
If you have already installed the beta from May, then you can continue using it. If you yet have to start evaluating AADSync, then this updated build will make the installation easier and will avoid common problems during the installation.
Download the new version via the Connect site.
Until later,
Henrik Walther