Rovio has released the Year of the Dragon update for Angry Birds Seasons in time of the Chinese New Year celebrations. You can grab the update from Android Market now, and it is free.
Game Description from Android Market:
Fireworks popping, lanterns glowing, red envelopes bursting with money – it’s Chinese New Year! This holiday is China’s biggest and longest festival, a time for feasting with family and friends, setting off fireworks, and having fun. The Angry Birds are celebrating the start of the Year of the Dragon, but the piggies are trying to scare them away from their eggs! Luckily the Angry Birds have some help – the Mighty Eagle has transformed into the fearsome Mighty Dragon!