In a interview for Vulture Samuel L. Jackson revealed that he had recently been on the "Agents of S.H.I.E.L.D" set.
Jackson said, "I did! Last week! I just shot the end-of-the-season show," Jackson told Vulture. "You're trying to get me fired and killed! I don't talk about Marvel's business. None of us do. ... If they ask Kevin Feige and Kevin says, 'We'd like for you to do it,' I do."
So we will be seeing some Agent Fury on the season finale set to air May 13th.