The list of features so far seems to me to warrant not an iPad 4, but an iPad 3S. What seriously big feature is missing from the iPad 3 (other than faster, slimmer, lighter) that would warrant a new (big) version and big launch event? Unless it's dramatically faster, slimmer and lighter, why would they upgrade it? A new dock connector? OMG, I must run out and get one! LTE in *my country*? OMG, I must get one. These are such small jumps, compared to gen 2 over gen 1 and gen 3 over gen 2, don't they seem like not much at all?
(this post promotes me to 6502a!)