That picture has been floating around for almost 3-4 years now. It was a photoshop picture showing what someone must have thought the Gen III may have looked like. Here: http://priuschat.com/forums/gen-iii-2010-prius-main-forum/77908-can-you-identify-prius.html
Even if it is modified, the back appears to be more roomier than any Prius. (not the 2012 v) but front of the current gen III is really the best so far. Even better than 2012 v.
I hate skinny vertically-oriented headlamps. on a selfish note: I hope I find the next gen unattractive because it'll be easy to fight the urge to upgrade.
That picture has been floating around since before cars were invented. That picture was originally debunked by Moses as a speculated Photoshop by Abraham. I'm pretty sure that on the seventh day, God rested and created that picture. It's a phoney.
I really like the Gen III design, and it's one of those things where you wonder if they can only go backwards in design. Such as, IMO, the second-gen Lexus RX looks so much better than the third-gen Lexus RX. The thing they can improve the most upon is on the rear end of the Gen III, it looks frumpy.