The first storyboard depicts a city with cars and buildings in flame. No doubt it is part of the imaginary world of the Matrix, but still a startling "reality" for those still living in it. Keanu Reeves' character, Neo, is poised to attack someone in that shot.
The next storyboard shows someone being punched in the head, most likely by one of the Agents with the extraordinary power they wield (AICN reminds us that they were capable of punching holes in concrete walls in the first movie).
The last picture seems to be a snapshot of Zion, the last free city. Not much is shown other than the landing platform, but at least we know it'll be featured in the films. For larger versions of the pictures and the whole story, see AICN.