The XPS 13 has received an OLED upgrade, having previously been available with only IPS panels. Everything about the XPS 13 9310 remains identical though, including its choice of Intel Tiger Lake processors, LPDDR4x RAM and M.2 PCIe NVMe storage.
https://www.notebookcheck.net/Dell-launches-the-new-XPS-13-with-a-3-5K-OLED-touchscreen-and-Tiger-Lake-processors.532036.0.html