There isn't much going on, but this just came through a few hours ago. Some spoilers from E!Online.
There will be a zombie episode which we will see Bobby's dead wife; Dean is not going to be happy about what Sam is about to do; and Chuck will return but not with Becky.
And here is an interview with Misha Collins/ TV Guide.
Is it just me or have Jensen and Jared gone really quiet with press interviews?