My pet theory is the All-Or-Nothing theory:
NBC-Universal owns Sci-Fi and USA. It also owns Bravo, CNBC and MSNBC. All are available in HD.
My guess is Dish won't be able to pick up USA and Sci-Fi HD unless and until it agrees to pick up Bravo, CNBC and MSNBC in HD.
If DISH has the bandwidth for FIVE new HD channels, then you might see BSG in HD.
But probably not. Either Dish does not have the bandwidth, the contract or the inclination.
Same applies to Speed HD. No Speed until Dish picks up FNC HD and FBC HD and SD.
I would say that based on politics, Speed is a LOT LESS LIKELY.
I think it is MOST likely that we will see ESPN News HD, Disney HD, Toon Disney HD and ABC Family HD before we see any of the NBC-U or FOX channels in HD. Why? ESPN is the Big Kahuna. We might even see ESPN-U HD (Coming this summer) before we see any of the NBC or Fox Channels in HD.
Of course, by then we might all be Directv customers. I know D* is looking better to me every day. And I Have been with Dish more than 10 years.