This may be old news, but it's the first I've heard of it.
Team Takedown, welterweight Johny Hendricks, lightweight Shane Roller, and middleweight Jake Rosholt (each have roughly one-year of experience, were All-American amateur wrestlers at Oklahoma State, and currently train with Randy Couture), have been signed to multi-fight contracts by WEC.
I'd expect one or more of them to debut in September.