"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
3D Printable 4.7-Inch and 5.5-inch iPhone 6 Mockups Now Available from Free Plans
Using measurements available from leaked design drawings, the plans allow anyone with access to a 3D printer to print out the alleged iPhone 6 design and see how it feels in their hand. The set includes an .STL file for 3D printing and an editable OpenSCad file that can be used to modify the design and add some of the missing details like the Apple logo.
So, here's an OpenSCad file to create one, and the STL file it makes. There are some comments in there, so you can adjust things to your personal rumour preference. And improve it, of course. It doesn't print the expected lump on the back for the lens (that would mean the entire build would be on supports, or it would have to be printed a different way around). Neither does it have an apple logo or some other details that would be nice. Maybe I'll improve it soon, or feel free to do so yourself...There has been no shortage of renderings of the rumored iPhone 6 that provide an advance look at the possible shape and size of Apple's upcoming smartphone. A new post from Taiwanese blog AppleCorner provides precise measurements of 138 x 67 x 7.0 mm obtained from one of these mockups, while a Sonny Dickson leak shows physical mockups in roughly the current three colors used on the iPhone 5s.
While there are a variety of cases and mockups all pointing in the same direction for the design of the iPhone 6, it is important to remember that most of these products are essentially all based on the same sets of leaked design drawings, and they ultimately may or may not prove correct.