BuildFeed, a site that keeps track of the latest Windows 10 and Window Insider builds, has found a new build that may indicate that Microsoft is internally testing builds for foldable Windows 10 devices. The mention of ‘foldable’ moniker in the string also indicates that the long-rumored modular Windows Core OS is designed for a new family of devices and it won’t be limited to a specific model. Microsoft has not officially revealed any plans for dual-screen or foldable devices, but rumors continue to claim that the software giant is still working on a portable, foldable PC.
Source: https://www.bleepingcomputer.com/news/microsoft/first-windows-10-build-for-microsoft-s-foldable-devices-appears-online/