If you look at the cast of the latest episodes, Rigsby and Van Pelt were listed with a "(Credits only)" sign after their names, but in the upcoming episode The Golden Hammer, the "credits only" sign is absent, which means that they will have roles in the episode. Also there usually is a tiny description of the episode before it airs, while there is none for the this upcoming one........hmmmMark my words; there is a surprise coming up!