The Hero Academy Website has new screenshots and details for the "Steam-exclusive Team Fortress 2 heroic team" coming to the game. Word is:

Robot Entertainment has released new screenshots and details that offer players a first look at the unique abilities of the upcoming Steam-exclusive Team Fortress 2 heroic team. As with all previous teams, the release of the new Team Fortress 2 team will be accompanied by TF2 avatar packs for your Hero Academy profile and a new playing field inspired by the TF2 capture-the-flag map, “Well.” In addition to the exciting new team, each of the previously released heroic expansion teams that players purchase in the Steam version of the game will unlock a unique cosmetic item in Team Fortress 2 inspired by a member of that team. Hero Academy will be available on Steam on August 8th, 2012, and is currently available on the iOS App Store.