There's a tiny snippet about Mockingjay Part 1 in Entertainment Weekly's 2014 Movie Preview Issue (it's the January 17, 2014 issue) but we couldn't resist posting it!
If you thought Catching Fire was dark, you ain't seen nothing yet. In Mockingjay Part 1, Katniss Everdeen (Jennifer Lawrence) endures more violent loss and personal betrayal when she reluctantly becomes the face of the rebellion seeking to overthrow the Capitol. Director Francis Lawrence, returning for the two-part finale, is undaunted by the challenge of adapting the last book in Suzanne Collins' beloved trilogy. "Even though it may be the toughest, and people view it as the bleakest, " he says, "it's the story that gives meaning to all of them."