Lenovo makes three types of laptops: classic clamshells, 2-in-1s that fold over, and each year a really whacky one. Because they can. It’s not a concept. You will be able to buy one.
The ThinkBook Plus G5 Hybrid is a classic Windows clamshell which has a detachable screen that runs on Android. Plus some software to run Android apps right on the Windows desktop, when it is attached. When you detach the screen, you can connect the base to a separate monitor and now you have both a PC and a tablet.
I have no idea how this feels, but I am going to give it a spin when I get the chance. Lots of other announcements which you have to expect from the world’s largest PC maker, but this one stands out.