In image 2 phones were kept side by side, the left one is leaked iPhone 5 (or probably not) and on right side you had iPhone 4S. By look it iPhone 5 seems to have larger display as we all are expecting.
Like all other leaks and rumors of iPhone 5, at this time we cant say whether this image is original or not, we have to wait for any announcement from Apple. Stay tuned with us and we will keep you update. If you have to share anything then comment below.