A Chinese website named Apple Daily has leaked the pictures of what they claim to be an iPad 3. From these released images it looks like Apple Inc, has not made any big changes to the design of their new tablet.
The below picture by Apple Daily is a comparison of three versions of iPad, and the third one with bigger tapering and wider camera lens, named in Chinese seems to be the third upcoming iPad.
The cable comparison images:
However, beside this unofficially leaked photos, Apple has not yet released any official images of the iPad 3, and the company has also not confirmed about the specification and features the new iPad is gong to have, so for seeing it in real we need to wait for it's official launch, which according to iMore is on 7th March.