In addition to a different design, the second iteration of the Rock space AX1800 wireless router also comes with WPA3 security and TWT support for lower power consumption on the connected devices. The list of features inherited from the first version includes WiFi 6, OFDMA, BSS Coloring, and more.
https://www.notebookcheck.net/Rock-space-launches-the-second-generation-dual-core-AX1800-wireless-router.593889.0.html