Lenovo has revealed what it is calling the "world's first foldable PC" at its Accelerate 19 conference in Orlando, Florida. Currently in prototype, the device may form part of Lenovo's ThinkPad X1 family should the Chinese PC maker decide to eventually launch it as a shipping product.
https://www.notebookcheck.net/Lenovo-reveals-prototype-foldable-laptop.420564.0.html