Marvel will hold their Comic-Con panel on Saturday July 20th, in Hall H. There we will learn a lot more about Thor: The Dark World and Captain America: The Winter Soldier. The studio has unveiled the two posters for these films that they will be handing out to fans at their booth. Both of these prints are concept art that was used in developing the film.
I imagine they will also discuss what they have planned for the rest of phase two and three. I really hope they don't wait for D23 to tell us what they have cooking in the oven.
It's expected that Marvel will officially announce Doctor Strange and Black Panther, and reveal some news on Guardians of the Galaxy and Ant-Man. We'll be there reporting on all of that news, so stay tuned for details!