Looks good for a sound card, would it sound good? Who knows. Oh yeah there is also another model codenamed D2X with PCI-Express X1.
http://www.asus.com/news_show.aspx?id=7319
Seems to be using a in-house developed chip called AV200 which is said to be totally new.
http://www.asus.com/news_show.aspx?id=7319