I just checked my HR20 listings, and I have Mythbusters HD from channel 278 (regular Discovery). It has the little HD logo, and says "Hi-Def" but the show is clearly not HD when I watch it. Is this just a typ-o, or is 278 going HD?
Understood, but the show never said HD before now. Besides, my shows only say HD when they are recorded from an HD channel.The original show may be filmed in HD but 278 is an SD Channel.
I noticed that too, as I was deleting it, so I didn't have a chance to investigate. But yes, it was in SD on 278. I am very much looking forward to the day that Discovery is in HD (flagship, Science...not too concerned with Animal Planet).
Also really looking forward to History Channel in HD. I think that was one that was going to go live near the beginning of the big roll-out.
But back on point: I think the clear understanding is that the channel you get now as SD will be visible to your box as HD on that same channel. So Discovery (HD) will be the same mapped channel as Discovery (SD). I don't think they are remapping the channels to have all the HD in one range - like they do now with the 72-99 range. So sometime soon, when you come home from work on a Wednesday night, and turn on Mythbusters, it will be a pleasant surprise!!