According to the rumours flying around now the iPhone 6 will come in two sizes, 4.7" and 5.5". The larger version looks a bit to big for an iPhone but I'm sure plenty of people are looking forward to getting an iPhone 6 with a larger screen.
The devices pictured are only mockups but they're in line with the rumours we've heard over the last few months. Also, they look like a next logical step in the design of the iPhone so I'd say this is the real deal. Probably Apple will launch the iPhone 6 at the beginning of October.
For more pictures and a comparison with older devices head over to Sonny Dickson's blog post about the iPhone 6.