Seeing that Apple is already offering 16-inch MacBook Pro models and Microsoft is pushing for more 15-inch Surface laptops, Huawei is now willing to step up its game with 15-inch Matebook models of its own. According to the renders leaked by Evan Blass, the 2020 Matebook series will include 15-inch, as well as 14-inch laptops.
https://www.notebookcheck.net/Huawei-s-15-inch-Matebook-gets-leaked-specs-and-renders.443337.0.html
I think this is probably fake. The 3:2 ratio screen is the best selling point of current Matebook 13 and 14. In addition, they look identical to the new magicbook 14 and 15 that are to be released next except for the Huawei Logo