Uhhhhh...what?
iPods at that time had all switched to USB charging. And Apple changed whatever lead it was using to charge the newest iPods...for some stupid reason.
They still supported firewire charging (not syncing) which is what changed, new ipods and iphone 3g do not support firewire charging.
But the lead was the same for both...now that changed? Another pointless change to keep you buying new crap.