“Various & Sundry Villains” is the title of the February 1 episode of Supernatural and The CW has released a description to promote it!
Here’s the write-up:
THE WITCH IS BACK – Dean (Jensen Ackles) falls victim to a couple of witches, sisters Jamie (guest star Jordan Clair Robbins) and Jennie Plum (guest star Elise Gatien), who manage to steal a powerful book of spells from the Winchester brothers. When Sam (Jared Padalecki) and Dean go after the book, they get help from a powerful and surprising ally when Rowena (guest star Ruth Connell), back from the dead, intervenes to assist them. Amanda Tapping directed the episode written by Steve Yockey (#1312). Original airdate 2/1/2018.
UPDATE: We now have some photos! Enjoy: