Wow,
these guys are pretty much promising the moon. It's got a CD/DVD player, a hard disk, satellite inputs, Ethernet, wireless Ethernet, HDTV support (including recording), and it plays MP3s. It's got all the features of a TiVo plus almost all the features of the HSX-109 (no CD burner). And, it runs Linux.
Of course, it's pseudo-vaporware. They won't be selling boxes directly. You'll buy one, most likely, as an EchoStar/Dish set-top-box-of-doom. None-the-less, it's extremely cool. The question, of course, is when it will ship and for how much (and with what subset of the currently-claimed features).