APPLE'S ALL-NEW IMAC PRO IS NOW AVAILABLE, FIRST ORDERS ARRIVING DECEMBER 27

Apple originally debuted its new iMac Pro back at WWDC in June, saying it would be available in December.

At the time of unveiling at WWDC, Apple touted that the iMac Pro is the "most powerful Mac ever," even beating out the current-gen Mac Pro.

"iMac Pro combines the incredible design of the iMac with the most powerful workstation architecture we've ever built," said John Ternus, Apple's vice president of Hardware Engineering. "iMac is the most popular desktop for our pro users due to its amazing display and elegant design, so we completely re-engineered it to deliver performance far beyond what anyone thought possible in an all-in-one."

Apple gave some practical examples of the speed benefits over the existing quad-core iMac: As for the future of the rest of the Mac lineup, Apple announced earlier this year that a radical new modular Mac Pro is coming, as are new displays. Prices start at $4,999 and max out at $13,199.