UFC 200: New Main Event Revealed ... Jones vs. Cormier

Conor McGregor is out ... Jon Jones is in!

UFC honcho Dana White just appeared on "Good Morning America" to announce the new main event for UFC 200 in July -- Jon Jones vs. Daniel Cormier!!

We kinda saw it coming ... so, it's not really a shocker -- but people are fired up about it.

These two guys HATE each other -- and cussed each other out the last time they were face-to-face.

This should be fun!!