In addition to unveiling macOS High Sierra and updates for the iMac and MacBooks, Apple today announced the new iMac Pro. It looks a lot like the current iMac, but it comes in an awesome Space Gray finish and Apple says it’s the “most powerful Mac” they’ve ever made.

“We’re thrilled to give developers and customers a sneak peek at iMac Pro. This will be our fastest and most powerful Mac ever, which brings workstation-class computing to iMac for the first time,” said John Ternus, Apple’s vice president of Hardware Engineering. “We reengineered the whole system and designed an entirely new thermal architecture to pack extraordinary performance into the elegant, quiet iMac enclosure our customers love — iMac Pro is a huge step forward and there’s never been anything like it.”

Apple says this new 5K iMac has Workstation-class performance in a beautiful iMac design. The starting configuration has 8-core Xeon processor, but you can get up to 18 cores. It has a new set of fans that are “dual centrifugal,” allowing for much more efficient and powerful airflow. You can also get up to 128GB of ECC memory and up to 4TB of SSD. You can see some of the other features in the above image.

Also worth noting that the iMac Pro comes with the new Radeon Pro Vega GPU, the most advanced graphics ever in a Mac. Featuring a new next-generation compute core and up to 16GB of on-package high-bandwidth memory (HBM2), iMac Pro with the Vega GPU delivers up to an amazing 11 Teraflops of single-precision compute power for real-time 3D rendering and immersive, high frame rate VR. And for half-precision computation, ideal for machine learning, iMac Pro delivers up to an incredible 22 Teraflops of performance.

The new iMac Pro starts at $4,999 and will be available in December. So, who’s getting one?