MMAWeekly.com has the story:
Sources within the popular training center confirmed to MMAWeekly.com that Xtreme Couture is promoting its first mixed martial arts event to be held in Las Vegas at the Thomas & Mack Center on Oct. 18.
HD Net Fights will broadcast the event live.
Confirmed Xtreme Couture fighters include Mike Whitehead, who will take on veteran Allan Goes, as well as welterweight John Alessio, who will tangle with Gideon Ray. Jay Hieron and Mike Pyle are also scheduled to participate, but their opponents are unknown at this time.
This must have been part of the deal when Couture came back to the UFC because under normal circumstances this doesn't seem like something Dana would be game for.