I believe so. Who else do they have? Conor is still carrying the UFC on his back and after the 2015 the UFC has had, mainly because of Conor, he actually deserves it.
Look at it objectively:
DJ? Not a chance.
Cruz? Can't see it
RDA? Not unless he fights Conor
Robbie? Possibly, definitely if GSP returns
Rockhold? I can see that with Weidman, but still think Conor
Jones? Not unless his match with DC gets postponed
Verdum? Maybe, but I still think Conor
The females? Co-main probably, but still need a headliner