Does Paul Heyman now work for the UFC?

Shane Carwin recently tweeted the following: "Paul Heyman is here handling the UFC Countdown shoot. ... Nice guy."
Heyman is best known as the former on-screen manager of Brock Lesnar during his days with WWE and one of the most revered promoters in the history of pro wrestling. Has he brought his brand of salesmanship to the world's largest fight promotion?