Angry Birds Seasons will be getting a September update Moon Festival modeled after the Chinese Season, but North America won’t be getting it first. The developer Rovio has established itself in China with new offices and new plans for their second biggest market including giving the Chinese first dibs on the next Seasons update.
Moon Festival is based on the Chinese mid-Autumn festival which includes elements familiar to Westerners such as paper lanterns and moon cakes. Though little is known about the actual gameplay of the Moon Festival episode, Rovio is marketing Angry Birds-themed moon cakes to the Chinese citizenry.
Angry Birds Seasons: Moon Festival should launch in September in China then worldwide. Rovio has not indicated how many levels, Golden Eggs, or Bosses their will be.