Because Apple's latest iPhone model, the iPhone 4S introduced yesterday, is approximately the same exterior dimensions (with the same button and camera placements) as the iPhone 4, existing cases also fit the new model. Consequently, vendors have had no issues in making "iPhone 4S" cases immediately available, even though the new phone isn't actually out yet. Below are some of the newest cases from a variety of makers, compatible with both iPhone 4 models.
