Anadtech has finally gotten around to reviewing the late 2012 iPad. As usually you will find an extensive in-depth analysis of Apple`s latest offering.
"The 4th generation iPad is a good evolution over the 3rd generation model. It doesn't fundamentally change the device or its function, it just makes it better. Battery life and performance are both improved over the iPad 3, and on the graphics side we finally have an SoC capable of driving good looking games at the iPad's native resolution. I don't know that there's substantial enough of a change to warrant an upgrade from the iPad 3 (unless you happen to be a game developer), but if you've been considering the iPad the 4th gen is a definite improvement over its predecessor.
If you're torn between the big and mini iPads, I've been recommending the mini for those who plan on traveling a lot with their tablet and the iPad 4 for those who will mostly use it at home. The exception to the travel stipulation is if you're a photographer and plan on using your tablet to show your portfolio/proofs/etc, in which case the color accuracy of the iPad 4 trumps the mini's portability."
as always a great review, worth the read if you are thinking of purchasing the latest iPad