The WIN 2 Max is rumored to get a few improved specs, including a higher-resolution 1280 x 800 screen, a new AMD APU with integrated Radeon graphics that can be overclocked for improved performance or underclocked for extended battery life, and a keyboard with bigger keys. The model is expected to launch in late 2019.
https://www.notebookcheck.net/GPD-to-release-Win-2-Max-handheld-Windows-gaming-console-this-year.415778.0.html