I’m excited because I can’t really see the use-case for a dynamic keyboard, so I’m expecting to be surprised. For me, looking down at the keyboard is an UI failure: either the keyboard shortcut assignment is not logical enough, or I can’t find the feature on-screen.
The simplest explanation is that it’ll be app aware keyboard shortcuts. Which seems like a cool-looking feature, but not that useful.
I really do hope it has nothing to do with the Dock or notifications. They would be a trying to do a hardware feature to fix a window management limitation — an area where both Windows and ChromeOS have been more innovate than OSX in recent years.