I saw that in a video the other day Dana confirming it.
And for those who knock this is silly, this is such a great thing for the UFC, it's going to bring more media attention and everything, there is really no disadvantage with this what so ever.
The Rock has always been a legit UFC fan for a while too, he's been following a lot of the UFC stuff on Twitter for a while so this is really a good thing, he's one of the most loved people in the world and will bring lots of new fans to the UFC and the event.
It's a good thing, in all ways.