Check this link,
AppleInsider | Dual core SGX543 dramatically boosts iPad 2 graphics
Read thru the comments, then look at the comments in this forum on what iPAD3 should be and why they are waiting, and skipping iPAD2.
Forgive me for suggesting links to other information souces, but this is really an eye opener.
iPAD2 is a revolutionary evolution in the development of touch screen tablet.
Apple is the competition... Macbook Air incorporates most of the features many want in iPAD3 and beyond.
To read a book, try holding "Air" in one hand ... light weight and fast with a bigger screen. Then hold iPAD2 in one hand and feel the difference...
iPAD is great ... it works well ... iPAD2 is WOW... "AIR" is an entirely different dimension.
All in one ???????? so we only need to carry one device. Dream on ...
Then digest what John Gruber has laid out for consideration ...