From the announcement:
Game Announcement: Pandemic Legacy!
You’ve heard the rumors, you’ve wondered, you’ve questioned! Today, it is official: Pandemic Legacy will be making its way to the Z-Man Games collection!
Designers Matt Leacock and Rob Daviau (designer of Risk Legacy) are working very hard at developing this project and making it come to life!
One year. One team. One hope.
Pandemic Legacy starts what will be one of the worst years in human history. Whether it is the worst year is up to the players, who must band together to save the world. Unlike Pandemic, actions taken in one game will affect all future games. Characters will change. Some may be lost. Heroes will emerge. And, of course, there are the diseases, which start under control but soon... Can you save humanity? So much more to come about Pandemic Legacy, will you be ready?