Code in latest Windows 10 SDK references ARM flavored folding Surface Phone?
9

Since late last year, we have passed along a number of Microsoft patents related to a folding device that reportedly runs on a special version of Windows 10 called Andromeda OS. The patents point to a tablet that folds into a smartphone. There is speculation that this is the long-awaited Microsoft Surface Phone, a product whose existence has reached a myth-like status.
Earlier this month, a patent application filed by Microsoft revealed the use of a thin "hinge" screen that would be placed between two larger screens. With this third screen in place, the device would give the illusion of having one large display when in "Tablet mode."
The code found on the SDK also contains references to WindowsCoreOS, which turns Windows 10 into a modular platform, and Polaris. The latter is a version of C-Shell that puts a desktop shell on top of WindowsCoreOS.
source: @h0x0d
Things that are NOT allowed: