When I share a link of a prototype and have the option "Show Hotspot Hints" enabled, it shows clickable areas. It would be great if there could also be an option to display information on available Key & Gamepad triggers.

Building out a prototype that is interactive currently has it's short comings but it's great to see Adobe listening to XD users and expanding the prototyping capabilities. Because there currently isn't a way to show On-Hover type of interactions, I have to fake it by creating a keyboard trigger that I press at the same moment I move my mouse over that object. This works ok for me because I built the prototype, but to those I'm sharing it with that look at it during their own time assume the prototype ends after only a couple of screens because they don't know there is a hidden key.

If Adobe is working on micro-interactions to give abilities of On-Hover, it might be a moot point.