Since 10 years is a long time, (13% of the average human lifespan) the theme should be age.
Perhaps a life simulation such as the sims or even a story game about reaching a certain age or what happened at a certain age.
could you join my team you seem like amazing pixel artist
I don't think there's going to be a theme. Given the nature of the jam, a theme would be counterproductive
I hope there isn't a theme, I already have the beginnings of my game planned out.
Age is a great theme however it would limit the creativity of the hundreds or thousands of developers who will be participating in this jam. Hopefully we don't get a theme.