Folding Microsoft Surface with two screens is supposed to be out of pocket

Rumors of a dual-screen surface have a little turned around, but here's a surprising new detail: it's built for your pocket. That's what it looks like, anyway. The revelation comes from an internal document obtained by The Verge, although Microsoft has not confirmed it.

"It's a new pocket format that brings together innovative hardware and software experiences to create a truly personal and versatile computing experience.", The document – which is simply cited, rather than reprinted in its entirety – reads .

From the sound of things, this dual-screen device is not a surface through the Nintendo DS. The screen folds over the top of the hinge, which means you see a single screen when you open the device to use it.

The Verge notes that Microsoft's "current engineering samples" resemble the 3D conceptual art created by Austrian designer David Breyer, who used existing patents as a guide.

While the device is still in development – Microsoft would experiment with a stylus, as well as different ARM processors – and could still be canceled, the document says that there is a tentative plan to release in 2018

As with any rumor, take all this with some degree of skepticism. In the absence of any official statement or reveal from Microsoft, none of this is confirmed.