Same design and faster performance. MSI is claiming the "world's fastest 120Hz/3ms display" for its 2017 GS series with even faster GPU options.
https://www.notebookcheck.net/MSI-refreshes-GS63VR-GS73VR-with-GTX-1070-GPU-and-120-Hz-3-ms-HDR-display.224652.0.html