If you watched the video demonstration above, of what appears to be the new iPhone 5. You would have seen some of the key differences between the iPhone 4 and iPhone 5. In the video, the casing of the iPhone 5 is missing several of the black, plastic strips that are present in the iPhone 4. This new iPhone shell still has a micro-SIM card slot, which could mean several things: it belongs to a global CDMA iPhone, it is a slight retooling of the current GSM iPhone 4. This new iPhone 5 also features a newly designed antenna to hopefully fix the issues caused with the iPhone 4 antenna gate problem.
As the launch date for the iPhone 5 is set to be somewhere in Late June/Early July, we can expect to be seeing many more alleged leaked images or even prototypes of this new iPhone 5. However, considering there is still 6 months till the iPhone 5 is expected to be released, this looks like a legitimate leak of the new iPhone 5.