Each year HRC will release new versions of that same bike in a very limited number, so you can probably find a place (HRC USA also known as thousand oaks honda, as well as Rising Sun Cycles and some other vendors) that you can pre-order a new bike for 2008. This is true for 125's and 250's.
Last year they were expecting changes for the 250 (rumors is all they were), as they are also expecting those same changes for 08. I am doubting they will come out with anything but the same at this point. of course it's not like the RS250 and 125's are out dated as far as 2-strokes go

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Charles Gallant