The only thing Dish has spoke of is MTV, VH1, CMT, Spike, NICK, and Comedy Central all in HD coming in the spring--which probably means they will launch in April/May/June when Dish Network has their annual Team Summit Convention Whatever it is, as in previous years Dish has been known to launch channels around that time of year so they can have something to talk about at that convention.
Dish Network seems to be solely concentrating on HD Locals at the moment.
HD is hot right now, Dish has been lacking in national HD additions lately...and they wonder why Directv get more subs and Dish Network don't. Even some cable companies with more national HD is gaining subs.