First movie still of Jennifer in Mockingjay Part 1 were released on Entertainment Weekly Magazine, you can check out on the gallery. Mockingjay Part 1 is scheduled to be released in November 21, 2014.

Lorde talks about Jennifer:
OK, we’ll stay in suspense. Was there anything specific about the Hunger Games series that attracted you to the project?
Yeah, I think there’s something about the Hunger Games that makes it a very modern-feeling blockbuster franchise. Often you get a heroine in a movie like that and they’re just not cool characters. They’re kind of sappy or kind of boring. But Jennifer (Lawrence) perfectly embodies Katniss Everdeen and you can’t not be interested in that character. She’s so smart and so tough and so brave, but she’s also like, I’m really confused and I don’t know which guy I want to date but like … hold on dude. There’s more important things to do than think about dating. I’ve got to save the world right now. It’s very fresh and modern which I like, but it’s also super youth based. It’s a good set of films.
Source

Royals and Team music superstar Lorde has been put in charge of curating The Hunger Games: Mockingjay – Part 1 soundtrack. She’ll also release the first single from the album.
“I sat down with Lorde on the set of ‘Mockingjay’ this spring and I was immediately struck by how she so innately understood what we, as both fans and filmmakers, were trying to accomplish with the film. Her immense talent and keen understanding of Mockingjay’s characters and themes not only have enabled her to create a song of her own that completely captures the film’s essence, but her insight and passion for our project make her the perfect creative force to assemble the other songs on our soundtrack. I can’t wait to share what she’s done with the fans — it is truly remarkable,” said Francis Lawrence.
“Curating the soundtrack for such a hotly-anticipated film was a challenge, but I jumped at the chance,” said Lorde. “The cast and story are an inspiration for all musicians participating and, as someone with cinematic leanings, being privy to a different creative process has been a unique experience. I think the soundtrack is definitely going to surprise people.”
Source 1 2
The Hunger Games: Mockingjay – Part 1 will be represented at the 2014 Comic-Con convention this weekend and the film just got an awesome new poster to celebrate the event! The trailer for Mockingjay – Part 1 will debut at Comic-Con this Friday (July 25) in the Capitol Gallery located in the Samsung Galaxy Experience at the Hard Rock Hotel in San Diego. Fans will be able to view it on the Galaxy Tab S.
Check out the exclusive limited edition Comic-Con poster by the incredibly talented street artist WK Interact for The Hunger Games: Mockingjay Part 1! #OurLeaderTheMockingjay http://www.wkinteract.com/
Source
A new teaser for the upcoming Hunger Games sequel, Mockingjay Part 1, has been released. The clip resembles a somewhat sinister party political broadcast and features an address from the leader of Panem, President Snow (Donald Sutherland), as he delivers a thinly veiled warning to his citizens. Peeta (Josh Hutcherson) is also seen in the video, standing by President Snow’s side.
CITIZENS: The Capitol requires your viewing of President Snow’s official Panem Address, “Together As One,” brought to you by Capitol TV in stunning 4K.