Are you talking about recently ended Linux App Summit 2019?
GNOME and KDE work together on the Linux desktop
Fragmentation has long been a problem for the Linux desktop, [SNIP]
Yes. About 10 years ago, they had already made this announcement... but it didn't lead to any cooperation.
But this summer, the operational directors of the "two teams" made this commitment together, again.
L. Torwalds said that this is a good thing, because "offices war" contributes to the fragmentation of the *nix desktop ecosystem.
Another significant event is that, due to the trade war between the Trump Administration and the Xi Administration, Huawei now sells its MateBooks with Linux Deepin (renowned for the aesthetics of its interface), instead of Windows 10 (Huawei has been excluded from the American market by a decision of D. Trump).
A lot, a lot of money has been invested on Linux server (the time of the Linux community, but also big companies like Sun, IBM, Microsoft,...): all companies that do not want to start with a handicap, use Linux server to increase their chance to earn money with their Cloud (lower fixed costs).
But in the meantime, in the desktop field, the main characteristic remains fragmentation, which frightens the user who is a "basic" consumer.