Supernatural: Dean related scoop from TVLine's Matt Webb Mitovich

Here's some scoop on Supernatural from TVLine's Matt Webb Mitovich's weekly column Matt's Inside Line for the week of 3/21/13. 

Any news on what Supernatural‘s Dean will be doing while Sam is dealing with the Trials? –Sue
I turned your query over to exec producer Jeremy Carver, and his response was: “I can’t say much about the Trials, but when it comes to what might be in store for Dean, I have one word: Tron.” (Could that be, as I suspect, a reference to a recent casting notice that circulated last month?)

Link to the full article:Supernatural, Smash, Grimm Spoilers — Once Upon a Time, Grey’s Anatomy - TVLine