The OnePlus 5T is now official, with an 18:9 minimal-bezel screen, and a new approach to the dual camera setup that OnePlus claims improves the low-light performance.
https://www.notebookcheck.net/OnePlus-officially-launches-the-5T-with-an-18-9-screen-and-a-new-approach-to-the-dual-camera-design.263988.0.html