4 candidates, 1 endorsement?

Was the Pittsburgh Tribune-Review's Mike Wereschagin correct? Is there an Edwards endorsement looming? Perhaps at tonight's Colbert Report? I think we would have heard by now. But that doesn't mean the show won't be entertaining. It's line-up is chock-full of current and former candidates: Senator Clinton, former Senator Edwards, Senator Obama, and of course Colbert himself. Be sure to tune in. (Shout out to Ajay for the head's up.)