UPDATE, 5:15 AM: Cablevision provided this description of Kristin Dolan’s background and her responsibilities as Senior SVP of of Product Management and Marketing following the departure of Marketing EVP John Hargis: “She is currently focused on brand identity and new product initiatives, and has been with the company for more than 20 years. This includes many years working directly in the Cablevision product group, during which she took a leadership role in the development, launch and continued development of our iO TV digital cable service. For the last three years, she has been running our Strategic Product Development Group, focused on long-range development across all of our services. She is well known and highly regarded in the industry.”

PREVIOUS, WEDNESDAY  8 PM: Marketing EVP Jonathan Hargis, who has been with the company since 2000, is the latest high level exec to bolt — and that’s sure to leave investors even more baffled than they were before about CEO Jim Dolan’s plans for Cablevision. The official word is that Hargis will resign this month “to pursue other opportunities.” But the company release didn’t name a replacement, which suggests that Jim’s wife Kristin — who’s senior executive vice president of  product management and marketing, and a member of the Cablevision board– will play a bigger role. Analysts who have tried to determine how broad a mandate she has, and how Jim plans to manage things, say that they’ve yet to hear satisfying answers. Prior to Hargis’ departure, BTIG’s Rich Greenfield urged management explain

how Kristin fits in. “We believe she has been taking the marketing reins (unclear whether John Hargis  is still with the company and what is role is) and is currently leading the  company’s efforts to re-orient the marketing message for all of Cablevision’s cable products,” Greenfield wrote. He isn’t the only one who’s concerned: The Street was stunned late last year when John Bickman resigned as president of cable communications, closely followed by respected COO Tom Rutledge (now CEO of Charter). That left Cablevision’s management team with “big holes,” Bernstein Research analyst Craig Moffett said before the latest departure. Last week Jim Dolan declined to tell analysts on an earnings call why Rutledge left.