A new patent allegedly submitted by Huawei to the World Intellectual Property Office (WIPO) has been posted online. It is for a phone with a flexible display - however, for one that folds vertically (like the new Motorola Razr) as opposed to the Mate X's hinge orientation. Should this document be valid, it is a triple-camera, edge-to-edge screened device.
https://www.notebookcheck.net/Huawei-reportedly-files-a-patent-for-a-clamshell-foldable.443003.0.html