The schematic shows that the phone has dual camera lenses running vertically down the phone, rather than across the back of the phone as with the current iPhone 7 Plus design.
It also shows the location of what is most likely to be the fingerprint scanner beneath the Apple logo - and not included in the Apple logo which some iPhone fans including analyst Carolina Milanesi had raised as a possibility.
The sketch shows a iPhone case design that measures 72.497mm wide and 149.501mm tall - which would make the iPhone 8 about 1mm wider than the current iPhone 7 and about 1cm taller.
A slimmer and longer iPhone would be in line with the new look Samsung Galaxy S8.
The new screen shape reinforces the expectation that the iPhone 8 will have a larger 5.8-inch OLED that will be nearly edge-to-edge in design - or, in other words, a screen about the size of the iPhone 7 Plus in a phone about the size of the iPhone 7.
While this appears to be the biggest leak so far about Apple's plans for the iPhone 8, there are reasons to be cautious.
Dickson has a good track record on leaks, but this could be wrong. It could either be a design that Apple tried and rejected for the iPhone 8, given we know Apple tries out various models before it commits to a final design.
With no indication of the source, it is impossible to confirm that it is even a genuine sketch of an Apple design.
Yesterday, there was a warning by analyst Andy Hargreaves at Pacific Crest Securities that Apple would have to delay the iPhone 8 if it could not either solve how to incorporate a fingerprint scanner into the screen or settle with the design compromise of putting the fingerprint scanner on the rear of the phone.
While many smartphones have the fingerprint scanner on the rear of the phone, one of the downsides of the design is that you cannot unlock your phone while it is sitting on a desk.
