The new block diagrams are courtesy of leaker Olrak. AMD's next-gen Navi 31 and Navi 32 will reportedly be MCD (multi-chip designs) while Navi 33 will continue on being a monolithic GPU design.

Another block diagram of a more official nature leaked, ... In addition, Ryzen 3000 provides four USB 3.1 Gen 2. A dual-channel memory controller is also no surprise.