The Surface Duo is now available. Microsoft's dual-screen Android phone has been hotly anticipated, but early reviews suggest the device needs a bit more time to bake; while the design is good, the software is buggy. The phone starts at US$1399.
https://www.notebookcheck.net/Microsoft-s-Surface-Duo-dual-screen-Android-phone-now-available-starting-at-US-1399-early-reviews-unimpressed.492810.0.html
Great formfactor. I would love to play with. But ... to expensive for a non-5G non NFC, non IP65 device. So I stay with a small phone and a big tablet.
Hope this evolves, so I buy gen 3 or 4 (same as with the normal Surface).