If you waited to buy your Kindle then you waited too long. The new notice on the Amazon site now says:

Kindle Availability
Due to heavy customer demand, Kindle is temporarily sold out. Because we ship Kindles on a first-come, first-served basis, please ORDER NOW to reserve your place in line. Your Kindle will not arrive by December 25th. Note that Kindles cannot currently be sold or shipped to customers living outside of the U.S.