https://www.techradar.com/news/microsoft-might-make-a-shrunken-surface-that-fits-in-your-pocket

Microsoft may have not delivered on a Surface Phone last night, but Microsoft’s Surface Chief Panos Panay promises the company's working a pocketable Surface device and more.

How can we be so sure? In an interview published today, Panay, Microsoft’s corporate vice president of Microsoft Devices Group, refers to a pocketable Surface device as being “absolutely my baby” before alluding to the existence of Surface devices in other form factors outside of the ones already available.