Surface Laptop? Windows 10 S? What sorcery is this? In just a few hours, we will hear Microsoft explain why it doesn't have a new high-end Surface in sight. Snarkasm aside, the Surface Laptop is what has alternately been speculated to be the Surface Book 2, sans the 2-in-1 form factor. And as a "Chromebook killer", this traditional portable computer will be running a not so traditional version of Windows 10, Windows 10 "S", previously known as Windows 10 Cloud.