All of the specs are available at http://www.cetoncorp.com. Dual Core, 2.0Ghz+, 3GB RAM, Low Profile available. Most of the processing is performed on the PCI-Ex card which is compatible with 1x, 4x, 8x, or 16x slots. The card will be for sale Q1 or "by March 31, 2010". It could be tomorrow or anytime before the end of the quarter. If you want to know right away, go to their web site, click "Buy Now" and sign up for the newsletter (First, Last Name and email address). Sales really depend on manufacturing ramp-up and getting full certification from CableLabs which seems to have gone very well since the initial launch of the product at CES 2009 (we've been waiting for over a year now).
Ceton has stated that it will be sold through Amazon.com, other retail vendors (TBD) and via system builders. Standard versions of WMC 2007 (Windows 2007 Home Premium or above) will support one card (4 tuners) while system builders that are licensed to sell the advanced media pack will support two cards (8 tuners).