A "reliable source" told Fashionista that Lanphear is departing from Elle after four years as its style director — six years total at the magazine. While there's no speculation (yet) about where she's going, she was reportedly called in for an interview at WSJ. but didn't end up with Deborah Needleman's job; however, Lanphear seems to be on @DebbieNeedles's radar based on this hysterical (?) tweet, so perhaps she's off to T, Needles's new home. If she is leaving Elle.
Update: A spokesperson for Elle confirmed to Fashionista that Lanphear is leaving the mag, writing, "Kate is an extraordinary talent and we thank her for her many contributions during her six years at ELLE. We wish her the best of luck in her next chapter."