In the clip, we see a lot of what we've seen in the past and more fighting, incredible explosions and arrows flying. It's all-out war. There's also a wedding or some sort of celebration, but we've already been teased that Finnick is getting hitched in Part 2. There's also a shot of the late Philip Seymour Hoffman in the clip.
The director Francis Lawrence added that "Anyone who loves the end of the book will love the end of the movie."
During the Q&A portion of the panel, the cast reflected on what's been a great "Hunger Games" run.
Jennifer Lawrence revealed her favorite all-time scene from the series.
Hutcherson also commented Peeta's road to recovery. If you recall, he was in a bad place at the end of Part 1.
Then Willow Shields, who plays Katniss's little sister, dropped a bomb on the audience, saying "Prim is there for Katniss more than Katniss has been there for Prim."
Liam Hemsworth said to expect "a great scene" between Peeta and Gale. Love triangle anyone?
Here are more highlights:
"The Hunger Games: Mockingjay Part 2" is out Nov. 20.