Released today. It's $649 fully assembled, needs an OS (so everything but OS, basically) that's configured with a 500GB/BD/Wireless/Gigabit
Great review here:
http://www.anandtech.com/show/3824/asrock-core-100htbd-bringing-htpcs-to-the-mainstream-market/1
While no slots, with SiliconDust prepping Prime (an Ethernet Cablecard solution, providing 3 cable card tuners) expected for release between now-October, there is a great way to add 3 tuners to this in a hurry. And it's access to BD, a gyro-ready remote with mouse supports.. you could have a full functional everything you want in 1 box at sub-1k with full tuner supports, etc.
And, while this is something that doesn't come up here often, if you really want to be cheap, since this does to full 7 channel decoding (whether HDMI or other) those who are wanting a cheap all in one can find this is a HomeTheater in a Box all on it's own.
As drivers update, more features get added. But as it sits, full decoding supports for DTS-MA, DD-HD, as well as bitstreaming of same. Wireless supports. Blueray.
This isn't the "perfect" option. High end BD players will perform better.. though in my tests, any BD that is Java heavy is a different story, this unit would eat my Oppo's lunch on those titles.. but for a home theater room HTPC? This is goodness. And it's compact, slim design with minimal power usage and low noise (about 25db unless full load.. please note: playing BD is nowhere close, about 25% load) is quiet enough that it won't stand out.
Good stuff.
Ordered one for the bedroom, will have results/review soon.