Apple won't release its next-generation iPhone until the fall of 2016, so there are still months of development ahead. For the current time, Apple's flagship iPhones are the iPhone 6s and the iPhone 6s Plus, released to the public in September of 2015.
Though it will be several months before the new iPhone 7 launches, rumors about the device started trickling out in January of 2016. We've already gleaned many details about the upcoming iPhone, giving us some information on what to expect when it debuts.