Huawei has filed a trademark application with the European Union Intellectual Property Office (EUIPO) for the name Mate V. This would be an adroit term for, say, a device that can fold like a book in the current Galaxy Fold style. Therefore, the term may hint at such an upcoming phablet from this OEM.
https://www.notebookcheck.net/Huawei-s-new-European-trademark-could-make-an-apt-name-for-the-Mate-Xs-successor.480385.0.html