This will be our fastest and most powerful Mac ever, which brings workstation-class computing to iMac for the first time. Giving a sneak peek of the new iMac Pro, Ternus said, 'We're thrilled to give developers and customers a sneak peek at iMac Pro. It supports up to 4TB SSD, 128GB ECC RAM, four Thunderbolt 3 ports, and 10Gb Ethernet - a first for Mac. It ships with the new AMD Radeon Pro Vega GPU with 16GB of HBM2 memory.

The company also detailed a new thermal architecture that is said to give it 80 percent more cooling capacity in the regular iMac design. The iMac Pro is scheduled to ship in December starting at $4,999 in the US. The all-new iMac Pro will come in new Space Grey enclosure. The all-new iMac Pro sports 27-inch Retina 5K display with up to 18-core Xeon processors and up to 22 Teraflops of graphics computation.

The company also offered a sneak peek at the iMac Pro which is marketed as new 'workstation-class product line designed for pro users with the most demanding workflows.' Apple is calling it the most power Mac ever. 'Today iMac gets a huge graphics performance increase, faster CPU performance, Thunderbolt 3 and a brighter Retina display with support for 1 billion colors,' said Ternus. The company also announced an update to its 27-inch iMac models which Apple said is the 'most popular desktop for pro customers.' Ternus claimed that the new system is up to 3 times faster than the previous generation in terms of graphics, while the 27-inch will be 50 percent faster. The new 21.5-inch iMac Retina 4K will come with AMD Radeon Pro 555 and Radeon Pro 560 graphics.

Wwdc 2017 keynote date