Per an official release from the team:
The Philadelphia Eagles and Rovio Entertainment are launching an all-new version of the Angry Birds game which will be available exclusively on the Philadelphia Eagles Facebook page. The game will feature 16 free levels which will unlock one at a time each week during the season. The game, unique to the Eagles, Lincoln Financial Field, and Philadelphia, will officially launch on September 4th and a new level will be available the day after each Eagles game. The game will also introduce a brand new character, the Mighty Philadelphia Eagle.
You can check out a video preview of the game that's set to launch next week... after the jump!