Tomorrow is a big day for app marketers, and it’s not just because Apple is announcing the iPhone 5. It’s because the arrival of the iPhone 5 heralds a huge mobile app marketing opportunity for brands – an opportunity that starts with tomorrow’s launch event, picks up steam as the hottest new mobile device hits the shelves mid-month and extends throughout the rest of September well into the fall. To help mobile app marketers and developers understand how to make the most of this rich and timely opportunity, Fiksu analyzed data from the last big iPhone 4S launch in October 2011 to help portray what to expect on September 21.