Hey Ryan! Definitely something I’ve been looking for as well!
I can safely say this is a feature we’d all like to see in XD.Anonymous commented
I also have to express that not having the ability to hide the interface is incredibly frustrating. Working primarily on a laptop to design a website, the UI always covers a large portion of the design. A similar behavior to Photoshop's Tab key is really sorely missing.
The current Alt + Enter shortcut to preview would be one work around, if it didn't require selecting a specific artboard. It always defaults to previewing the first artboard rather than the one I'm looking at, which makes this whole thing even more frustrating.
It's been 3 years since this request came in. Is there any hope we'll EVER see such a thing implemented?