I guess it was suse or red hat somewhen end of 90s or beginning of 2000. Anyhow I didn’t like KDE back in the days and haven’t touched it since. Although the screenshots I’ve seen of the latest kde looked kind of good. But I’m mostly running arch or manjaro today and prefer gnome or some tiling manager like herbstluftwm.
In mean it’s what Google is doing for years now. Not saying it’s good by any means but it’s nothing new anymore.