There is no shortage of Panorama apps in the App Store. It seems Apple also considers to bring Panorama mode to the built-in Camera app.
As reported by Macstories, an iPhone hacker Conrad Kramer has found the code for panorama functions buried within iOS 5. The feature is not officially released by Apple yet. However, by setting the key ‘EnableFirebreak’ to YES in com.apple.mobileslideshow.plist, jailbroken iPhone owner can take a sneak peek at the hidden panoramic photo-taking feature.