Marvel Studios has announced today that their upcoming Phase Two sequels Thor: The Dark World and Captain America: The Winter Soldier will be descending upon Comic-Con 2013. The exact time and location (most likely Hall H) for these panels has not been released yet, but they will both take place on Saturday, July 20.
Marvel Studios President Kevin Feige is the only confirmed guest so far, although the studio promises "many special guests" to be present in San Diego later this month. It seems likely that a new trailer will be presented for Thor: The Dark World, which is set for release on November 8, but, with Captain America: The Winter Soldier currently in production, it isn't quite clear what will be put on display.
Chris Hemsworth returns as Thor in Thor: The Dark World, where he must battle the evil Malekith the Accursed (Christopher Eccleston) and his legion of Dark Elves, who threaten to destroy Earth and the Nine Realms. Alan Taylor is directing from a script by Don Payne, Christopher Yost, Christopher Markus, and Stephen McFeely.
Captain America: The Winter Soldier marks the return of Chris Evans as Steve Rogers/Captain America, still struggling to acclimate himself to present-day America. He teams up with The Black Widow (Scarlett Johansson) to take down his former friend Bucky Barnes, who has transformed himself into The Winter Soldier (Sebastian Stan). Anthony Russo and Joe Russo are directing from a screenplay by Christopher Markus, Stephen McFeely, and Joe Simon.