Since the theme is known i guess anyone can start at his/her own pace? Or do we want to make this a more of a shared experience thingy and work in parallel during the submission days?
While there is no way to stop people from starting now, people are strongly encouraged to work within the game jam rather than before hand. It's kind of part of the fun of a jam for people to be working at the same time, sharing their progress as they go.
