This past Thursday, Former WWE Champion CM Punk appeared at a media event in Las Vegas, Where punk made a comment about making his debut in UFC.
“I say this all the time: I’d love to fight tomorrow. But I want to be as prepared as I possibly can be and I will be. I’m still shooting for December. It might be January, I’m not sure. But I’ll be ready when I fight.”
The UFC website has an article about CM Punk making his UFC debut in the Octagon.