Files contained in the Beta folder contain: 7000 Series, 7200 Series, AirWave, Analytics and Location Engine, Aruba Instant, ArubaOS, MacOS VIA, MeshOS, Mobility Access Switch.
Download software here:
http://support.arubanetworks.com/DownloadSoftware/tabid/75/DMXModule/510/EntryId/428/Default.aspx