The Surface Neo weighs nearly 650 grams, predominately because of the metal and glass structure but offers an ultra-slim profile of just 5.6mm (that's slimmer than most smartphones).
On the inside, there are two 9-inch touchscreens that are joined by a 360-degree hinge. In the expanded state, it offers a 13-inch display with support for the Surface Slim Pen and a new magnetic keyboard.
What will be the user interface offered by Windows 10X?
Interestingly, Windows 10X will allow you to run multiple apps at once, including traditional Win32 desktop apps. The software will understand the position of the device (tablet, reader, laptop) and based on that, it will re-position the apps for you.
Additionally, Windows 10X will also support Progressive Web Apps (PWA), Universal Windows Apps (UWP), and others that could take advantage of the dual displays.
Right now, the Surface Neo is far from ready. However, Microsoft is working with partner OEMs to refine the hardware as well as software. As for the release, Microsoft has stated on its YouTube product video that the Neo will launch in late 2020.