Yesterday, Apple began shipping its Mac Pros to waiting customers, with many shipments carrying an estimated delivery date of December 30



From MacRumors:

The 6-core stock Mac Pro was ordered on the West Coast with Next Day Shipping and had a listed delivery date of December 26, but it was delivered early, just ahead of tomorrow's Christmas holiday. With Mac Pros already reaching customers just a few days after orders initially began, Apple has successfully met its promised December release date for the professional desktop computer.

  First Mac Pros Begin Arriving Ahead of Christmas