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As expected, the UFC will reach the century mark in July.

The Las Vegas-based MMA promotion, which has been holding events for 15 years, has officially announced what had already been widely rumoured, that UFC 100 will take place July 11 at the Mandalay Bay Events Center in Las Vegas.

The UFC sent out a press release on Friday which said the event will "celebrate the past, the present, and the future" of the organization, feature "the premier athletes in the sport of MMA today," and kick off "MMA’s next era."

No details on the fight card were included, other than to say it will be "stacked with fighters who have carried on the legacy established by the greats of the UFC such as Royce Gracie, Dan Severn, and Mark Coleman."

Interim heavyweight title-holder Frank Mir has publicly hinted that he will fight at the event in a rematch against heavyweight champion Brock Lesnar to unify their belts. The bout, which is expected to be the main event of UFC 100, was originally slated to headline UFC 98 before Mir was forced to undergo knee surgery, pushing back his return to the Octagon.

Also, UFC president Dana White told CKAC radio in Montreal last month that Georges St. Pierre will defend his title against Thiago Alves at the event.

However, the Nevada State Athletic Commission is set to review St. Pierre’s most recent bout against B.J. Penn based on a formal complaint submitted by Penn that the welterweight champion was illegally greased during their Jan. 31 meeting in Las Vegas. Penn is seeking the result to be nullified and declared a no-contest for actions by Phil Nurse, one of St. Pierre’s cornermen, who allegedly wiped Vaseline on parts of the fighter’s body other than his face, which is illegal.

In the submission, Penn also asked that the Montreal native’s licence to fight be revoked and that his cornermen that night, Nurse and trainer Greg Jackson, be suspended. Penn has also contended St. Pierre "ingested a substance that would cause his body to become highly and unnaturally slippery," according to The Canadian Press.

St. Pierre’s camp sent its own letters to the NSAC denying any wrongdoing.

The commission will look at submissions from sides during its next formal meeting on Mar. 17. But the outcome of this could conceivably affect if, when and against whom St. Pierre fights next.