This is a discussion on Apple Also Teases Their Fourth Gen iPad within the Apple News forums, part of the Apple News Room category; Fourth Gen 10-Inch iPad teased as well.
4th Gen iPad specs:
A6X Chip with Faster Performance - Twice that of the previous iPad Next-gen ISP ...
Some buyers of the new iPad have been able to return their iPad 3. Some stores wave the 15 day return policy and give them an extension of 30. I would imagine there are a lot of pissed off iPad owners from this past year. Here's an article on the return policy.