Even though I wouldn't put it past Dish to group several new popular HD channels into a new HD add-on package -- say, 'HD Plus' -- and then charge a modest additional fee for 'HD Plus', this isn't required to support my prior comment that HD Ultimate subs might be surprised when new HD channels are added.
The HD Ultimate package includes different HD channels depending on the SD package to which it is linked. For example, AT100 + HD Ultimate does not include Animal Planet, National Geographic, etc. So it is possible that some of the new HD channels will require a sub to AT200 or AT250. IIIRC when Nat Geo HD was added last year there was some consternation expressed in this forum about why Dish required AT250 just to get this, then new, HD Channel.
IMO one of the best things about the dishHD (only) package is that we can get all the current HD channels without paying for the SD fluff
Talon Dancer