Angry Birds for Windows Phone has been updated to version 1.1. The new version 1.1 brings 90 new levels to keep you shooting those pesky pigs. This brings the total levels up to 225 and unlocks episodes 10 and 11.You can download the update directly on your device through the Windows Phone Marketplace or by using the link which follows:
The game which costs $2.99 for Windows Phone users seams a little much compared to the Android and iOS versions which only cost $0.99. I hope the Windows Phone users get treated to something extra to make up for the higher cost.
source - WMPowerUser