The ThinkPad X1 Carbon had just been "coreboot" supported ( so it will be soon the libreboot best/newest one ? ) : that's one big add-point to Linux .
( Sorry if I misunderstood something , it's my first post and I'm not so geeky :) , english too is not my native language )
https://i.imgflip.com/1ogxn5.jpg
:)