They had to do the pricey adaptor from what I understand because it's actually a converter. The 9 year old 30 pin device was anologue....they're switching to digital so there's a circuit board in there to handle the conversion....it had to happen eventually....
It sucks, but no one should be surprised...It'll hurt accessory sales short term, I don't think it'll hurt them long term....haven't decided if I'm upgrading or not....