These new events come in two big categories: local and global. Both the local and global flavors can be world events, which are automagically activated by the game, or on-demand events, which are triggered by players. Global dynamic events are meant to reinforce the large themes of Firefall, while local events are all about what's going on in a specific region. The team is developing events to be engaging, varied, accessible, cooperative, and connected to the story of the world and regions in a meaningful way.
For a look at the type of events the team is working on, hit up the official blog post.