Apple just announced an updated iMac for 2020. Almost all the changes are for the 27-inch iMac but the 21.5-inch iMac and iMac Pro also get something for 2020. The first major change is the upgrade to the 10-th generation Intel CPUs. There are four CPU SKUs available; the base 27-inch iMac model has a 3.1GHz 6-core Core i5 that can Turbo Boost to 4.5GHz. The middle variant has a 3.3GHz 6-core Core i5 that can Turbo Boost up to 4.8GHz. The high-end model has a 3.8GHz 8-core Core i7 that can Turbo Boost up to 5.0GHz. Both the middle and the high-end model can also be customized with...
Source: https://www.gsmarena.com/apple_updates_27inch_imac_with_faster_processors_ssds_and_nanotexture_display-news-44602.php