In an event hosted for creative professionals earlier today, Apple executives clarified that the new Mac Pro desktop will indeed be released in 2019. In a somewhat surprising move, Apple will be working with professionals outside of the company to refine the product, which the company says will be designed from scratch.
https://www.notebookcheck.net/Apple-will-release-an-updated-Mac-Pro-desktop-in-2019-and-it-will-be-a-complete-redesign.296386.0.html