Angry Birds Seasons brings one new level for each day until Xmas1
The update to Angry BirdsSeasons come right on the heels of the new "Hoth Episode" of Angry Birds Star Wars. That update brought twenty new levels to the game and a new Princess Leia bird. Angry Birds Seasons is a bit more festive as the birds celebrate the winter season. 30 new levels were added to the game for Halloween Enjoy the new update which went out today.
source: GooglePlayStore via GSMArena