We already knew it was a big possibility with the way the Season 14 finale aired, but now we can confirm it. At San Diego Comic-Con today, during our roundtable interviews with Jensen Ackles, he confirmed Rob Benedict is in the episode they’re currently filming. Jensen also confirmed that Rob has been the one filming those last two days, and that he and Jared have not yet filmed.
Jensen’s directing the episode they’re currently filming, which will air as episode four. Supernatural returns October 10, 2019.