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!!