2020 could be the year of the iMac, according to multiple reports. Not only is Apple apparently due to refresh the 21.5-inch and 27-inch iMac, but a new iMac Pro is on the cards too. While the former could arrive as soon as this month, the iMac Pro is not due until Q4 2020. The iMac Pro may be worth the wait though, with Apple reportedly bringing mini-LED technology the all-in-one workstation.
https://www.notebookcheck.net/New-21-5-inch-and-27-inch-iMacs-due-this-month-mini-LED-iMac-Pro-bound-for-Q4-2020.455430.0.html