At the downloads page on high End Systems, you will found... and I belive that is theier official release. We all are using BETAs, I don't know about HES support etc.. since we here are mostly autoditatas (self learning) people. I like test things, so I am very OK with that.

http://www.highend.com/products/digi...aldownload.asp

Last updated Nov. 2, 2006 with m50 build:
Catalyst v4.05 m50UB_HD Software [zip] 6MB
Note: Catalyst v4.05 m50UB_HD is a Universal Binary and requires a Universal Binary dongle driver. Also, it is not recommended for OS X before 10.4.6.