Yes, iPhone 7 will probably lack the 3.5mm headphone jack
Right now, there are two types of leaks and rumors about iPhone 7. Ones that says iPhone 7 will lack the 3.5mm headphone jack and the ones that suggest that iPhone 7 will have the headphone jack.
The latest autoCAD renders about iPhone 7 and iPhone 7 Pro actually are similar with the most of the leaks. According to this leak, iPhone 7 will have a similar design with iPhone 6S but will be thinner as it lacks the 3.5mm headphone jack. However, iPhone 7 Pro ( not Plus ) differs from the current 6S Plus as it has a dual camera and smart connector. Again, there are different leaks. Some of them says 7 Pro will have a smart connector while some others says that it will not.
Right now, it is really messed up, so there is no way which leak is true.
Source – TheNextWeb