Angry Birds update adds 15 new levels, Super Bowl commercial will unlock special level

Angry Birds for iPhone / Angry Birds HD for iPad have been updated, adding 15 new levels, and the Super Bowl commercial will give a hidden clue which unlocks a special level of Angry Birds.

What's New In Version 1.5.1 ?
+ Adventures in the Frontier Badlands continue
+ 15 new levels – all crazier than popcorn on a hot stove
+ A new golden egg that is as mad as a bag of hammers
+ During Super Bowl XLV, watch the Rio Movie Commercial, there will be a hidden clue to help you unlock a special level of Angry Birds.

Angry Birds for iPhone ($0.99) / Angry Birds HD for iPad ($4.99) are available for download on the App Store in the Games category. Android users can download Angry Birds for FREE in the Android Market.