The Microsoft Surface Duo has passed through the Bluetooth SIG and FCC, signalling its imminent release. The dual-screen device would be Microsoft's first smartphone since the Lumia 650, which the company released over four years ago. However, the Surface Duo appears to be running on last-gen hardware.
https://www.notebookcheck.net/Bluetooth-SIG-and-FCC-listings-point-to-an-imminent-release-for-the-Microsoft-Surface-Duo-and-a-Snapdragon-855-chipset.482773.0.html
Comical proportions(considering single hand usage, as a phone), pathetic battery, probably MS tax. Great.