We had to start everything over again from scratch on Wayland. It's not novel for Linux desktops in general, but it is novel for Wayland.
Re:Sway 1.0-beta.1 release highlights
by justinsaccount on Sunday October 21, 2018 @12:03PM
(#18268644)
> You can even give your coworker the ability to focus and type into separate windows from what you’re working on.
Well over a decade ago, I had multiple keyboards with different layouts hooked up to my linux laptop, and could use both of them at the same time with no problem.
I'm not sure why this is supposed to be so novel.