Yes and No! Despite the PS5 Pro being taller than the PS5 Slim, the width and depth of the two consoles are exactly the same. The three lines that separate the top and bottom plates on the PS5 Pro have been added specifically to make the face plates / console covers compatible.
The bottom plates of the PS5 Slim WILL fit the PS5 Pro. However, the top plates won’t because of a slight difference in shape as well as the position of the fan. This means that while part of the covers are interchangeable, Sony will be releasing specific covers for the PS5 Pro.
Note that the original PS5’s console covers are NOT compatible with either the PS5 Slim or the PS5 Pro, since the original PS5 cover comes in only 2 parts (front and back panels).