Let's hope it will become available for Linux, too. I have been using Yakuake for over a decade now, mostly because I love how I can access the terminal everywhere with one button press.
At the same time, Yakuake seems to be in maintenance mode, and you should be happy when it works with new KDE versions.
In yakuake they have to register the Open/Retract shortcut with KGlobalAccel [1] and I don't think global shortcuts are implemented otherwise
[1] https://github.com/KDE/yakuake/blob/164d24b8bad1175199260c62...