Here's what Steve Burke, Comcast COO said in a recent interview here
http://www.tvpredictions.com/burke091306.htm
"TVP: Can you estimate how many new HD channels will be offered on Comcast systems between now and the end of the third quarter 2007?
"SB: We’re planning to offer 32-35 HD channels (including broadcast) by the third quarter of 2007. (Note: Comcast now has around 20 national and local HD channels, depending upon the market.)"
It seems to me that this is a reasonable estimate. I think I read that the prediction by D* of 100+ national HD channels by Rupert Murdoch was later disavowed by a D* spokesperson who said Murdoch "mis-spoke." (He actually said 100 HD channels by Christmas. More here
http://www.avsforum.com/avs-vb/showthread.php?t=725849)
Dana