Katie Couric signs on for 'GMA' guest-hosting gig; Chris Rock returns to late night

- Katie Couric -- who rose to fame logging the early a.m. duty for NBC's "Today" show before taking over the "CBS Evening News" anchor chair -- will guest-host ABC's "Good Morning America" for a week starting Monday (April 2). She'll be filling in for the vacationing Robin Roberts and share hosting duties with regular George Stephanopoulos.

- Rosario Dawson is working with "The Walking Dead" co-executive producer Gale Anne Hurd to bring graphic novel "O.C.T." to A&E as a pilot. The novel -- which Dawson co-created with David Atchison and Tony Shasteen -- centers on a character named Sophia Ortiz, a new member of the NYPD's Occult Crimes Taskforce. [THR]

- Chris Rock is returning to late night. He'll be executive producing a new series for FX starring comedian W. Kamau Bell. The weekly half-hour show is slated to cover tops like pop culture, race, politics, religion, the media and sex. [LA Times]

- When Kelly Ripa returns from vacation on April 9, she'll be hosting "Live! with Kelly" from a brand new set. According to a press release, the new space, "has the feel of a contemporary downtown-style loft, spacious and yet maintaining the studio's warmth and intimacy." Ripa will be sharing the space -- at least temporarily -- with guest co-hosts Howie Mandel, Carson Kressley and Joel McHale.