What DC Hero Is The Rock Going To Play?

According to an article I saw on Bleeding Cool, it's going to be Lobo:

Bleeding Cool was told recently that The Rock is going to play Lobo in Brad Peyton´s upcoming film of the DC comics. An untested, unknown source opened up correspondance with us, and told us a tale of “a Hollywood party” at which Mr. Rock was a guest, and told some fellow partiers that he was going to take the Lobo role.

From the DC Comics Database:

Lobo is an ultra-violent motorcycle-riding inter-galactic bounty hunter. Born on the planet Czarnia, he killed every other member of his race for a high school science experiment and then gave himself an "A" on the assignment. In addition to incredible strength, he has an accelerated healing factor that will completely regenerate his entire body from even a single cell. Despite his sadistic and vulgar attitude, he has a deep personal code of honor and will never break his word.