ASUS has begun selling the ROG Zephyrus Duo 16 (2022) in Europe. The 16-inch gaming laptop is available with several processor and GPU options, all with a 14-inch secondary display. Predictably, the ROG Zephyrus Duo 16 (2022) does not come cheap.
https://www.notebookcheck.net/ASUS-ROG-Zephyrus-Duo-16-2022-model-is-now-orderable-in-Europe-with-an-AMD-Ryzen-9-6900HX.619519.0.html
I've been waiting for this since asus announced it... Yet I am more inclined now to go with a MacBook and an iPad with sidecar, placed next to it.