According to Slash Film on Dec. 31, Dwayne Johnson had recently teased some information on his Twitter feed in regards to talking about a future project with DC Comics. In the past, Johnson was thought to be in a project regarding the Lobo character, but he said that "went away" some time ago. He was also attached to possibly be taking on the Black Adam role in a "Shazam" film, but that too, fizzled even more so than Lobo. Even though those previous rumors were laid to rest, there is an assurance that the wheels are indeed in motion with Johnson as well as DC Comics/Warner Brothers.
Some could speculate that this could have something to do with Zack Snyder's "Batman vs. Superman" film or some could think it could be an entirely independently done project.
Curiosity could lead those to think that it is rather coincidental that this Johnson tweet came on the fringes of the recent Jason Momoa casting rumors for the Snyder film as well as rumors going around about the Doomsday character. It would be feasible that Momoa and Johnson do have what it takes to provide motion capture work for the villainous character.