Yeah. There's nothing of substance here. All it is is a shortcut for private mode and a default to dark theme when you're in private mode. Not really noteworthy. It's a user-hostile update, even. Dark theme by default when private? I'll control my own themes, thanks. If people are unsure whether they're in private mode, put a permanent private mode indicator in the UI. And what about people who will now confuse dark theme with private mode? Their privacy story just got worse!