https://www.cnet.com/news/huawei-mate-20-pro-launch-live-stream-start-time-what-to-expect-update-2/

As it's done with the previous Mate 10 and Mate 10 Pro, it's expected that the two phones will share similar specs and designs, but the Pro will likely have the edge when it comes to amounts of RAM, storage and almost certainly price, thereby earning its "Pro" moniker. 

In terms of design, the phones are expected to be large -- with some rumours pointing to a whopping 6.9-inch screen on the Pro model -- but with an edge-to-edge design, complete with notch at the top.