This is Microsoft's secret folding Surface handheld, according to a report
https://www.cnet.com/news/this-is-microsofts-secret-folding-surface-handheld-andromeda-according-to-a-report/
In 2011, CNET reported the inside story of how Microsoft killed its Courier slate -- an innovative dual-screen tablet design that imagined the future of the PC.
Now, after months of rumors and patent applications, The Verge claims it's seen an internal Microsoft document that confirms a new pocketable, dual-screen Microsoft Surface tablet is not only on the way, but will look identical to the the 3D renders you can see above and below from designer David Breyer.