The other poster mentioned a launch on MWSF '09, but I hear that they're looking at the developer conference in June 09. Frankly, I think that rumor is ridiculous - what do developers have to do with earphones? That's why I think it will be later in the year, for the holiday season of Xmas 09, or immediately after, at MWSF 2010.
In any case, I think it's safest to wait before you buy, at least until MWSF 2010.
In any case, I think it's safest to wait before you buy, at least until MWSF 2010.