If you want to know exactly how much the difference is between the iPad 5 and iPad 4, take a peek at the video below produced by Chinese part manufacturer sw-box.com. The length of the new tablet is, at 239.2mm, 2 full mm shorter than its predecessor. In terms of width, there is a rather noticeable difference. The Apple iPad 4 measured 185.7mm wide versus the 169.5mm for the upcoming device. Our math skills aren't what they once were, but it still works out to a 16.2mm difference.
There is also a small, but noticeable difference in thickness. The Apple iPad 4 is 9.4mm thick while the iPad 5 is 7.2mm thick which is far from a subtle change. We might only be talking about mm, but you can see the difference. And the new iPad will be 37% lighter, making it easier to carry around.
The latest rumor has Apple introducing the new Apple iPad 5 and the Apple iPad mini 2 on October 15th.
source: sw-box.com via MacRumors, Pocketlint