Well, it fits the 'particles' stylings that we saw in that brief glimpse of the official presentation at least. The controller is probably a dev kit unit.
I'm hoping the UI is like it was for PS3/4, simple, functional, and with the ability to show off a background. Never understood criticisms of the UI because while it's very dry, I know where everything is and isn't that the one thing a UI should nail?
A few months ago there were already some pictures of that weird matte black DualSense iirc. It has to be some prototype model.
That UI is definitely in line with the teaser at the June event