Adult-Swim and Valve Team Up On Team Fortress 2

An interesting static website has popped up on the Adult Swim page. An image of the Red team from Team Fortress 2 sits below somewhat vague text.

COMING NEXT WEEK

ADULT SWIM & VALVE

ARE TEAMING UP FOR SOMETHING THAT YOU’LL PROBABLY ENJOY. TO LEARN HOW THEIR VIDEO GAME PEANUT BUTTER WILL BE GETTING IN OUR NETWORK’S CHOCOLATE, COME BACK NEXT WEEK.

ALSO: YOU’LL WANT TO SIGN UP FOR THE NEWSLETTER. YOU’VE BEEN WARNED.

Color me intrigued. With a series of Team Fortress 2 “animation cell” mock-ups floating  around 4chan for a while now, what could Adult Swim be up too?