Andromeda OS (2018) demoed!
(All About Windows Phone)

Ooh, this is interesting. Zac Bowden somehow got hold of unfinished builds of Project Andromeda from just before it all got cancelled. Remember, this was the evolution of Windows 10 Mobile with latest kernel and plenty of UI ideas from the world of journalling. It ran UWP applications and would have been fully compatible with everything in Windows 10 Mobile - and you`ll see that many app screens and settings look identical. The key thing here is a modern UI overlay that understands Project Andromeda`s two displays, along with a homescreen that`s more of a blank canvas, designed to be drawn on with a Surface Pen. All somewhat revolutionary and, as Zac says, horribly behind schedule mid-2018, with the finished OS and device due to ship at the end of the year.