It says on the website "shipping soon". If I were you I would wait for the reviews to come in. Elgato, the king of this sort of thing had a lot of bugs to work out when its Eye250 and Turbo H.264 devices came out.
( Those are excellent alternatives to consider BTW )
I saw this thread a long time ago, as I was also following the release of the Black Magic Video Recorder. It is now shipping, in case anyone is interested.