Of course, since it's a DVR, you can actually add more clients than tuners and have them play back recorded content while your other boxes use the tuners -- Intel was demoing XBMC on a Sony laptop connecting over DLNA and streaming a recorded program while a PS3 nearby ran a photo slideshow, all while the three cable clients streamed uncompressed HD video from the tuners.
ENGADGET: Video: Intel Tru2way server streams cable all over your house