http://tvline.com/2017/05/24/will-and-grace-series-finale-revival-estranged-children-spoilers/
Question: I’m still recovering from the deaths of the Supernatural finale. Yeah. I know. I should be used to it, right? What can you say about Misha Collins and Mark Sheppard? Are they in Season 13? Or have we seen the last of Cas and Crowley on the show? —Fernanda
Ausiello: Collins’ Cas is sticking around. Sheppard’s Crowley, however, is dunzo (for now, at least).