https://www.techradar.com/news/surface-centaurus-dual-screen-laptop-secretly-shown-off-by-microsoft

Microsoft has demonstrated a new Surface dual-screen device internally to staff within the company, potentially indicating that the device we previously heard about – codenamed Centaurus – might just be ready for a launch later in 2019.

This is according to The Verge, which claims to have heard from inside sources that Microsoft demonstrated the new Surface machine to its Devices team, showing a sizzle reel and letting them take a close look at a prototype of the PC.