We're Comcast dealers or reps or whatever we're called (We can sign pwople up for HD cable service) and I got this in an email the oother day..

"
Comcast HD DVR-Motorola DCT-6208
80GB HD
Approx. 9hrs HD, 30 standard/digital programming, varies with mixed
recording
New Interactive programming guide
$9.95/month includes $5 HD fee...only $4.95 more per month than HD service

Coming soon...60-90 days
Comcast DVR HD-Motorola DCT-6412
120GB HD
Dual Tuner- Watch something while recording another channel, etc.
Approx. 15hrs HD, 70 standard/digital programming, varies with mixed
recording
New Interactive guide
"

So looks like Motorola is finally shipping their single tuner and the dual is on the horizon.