The iPad 4 is definitely the best full-size iPad yet, but if you have a third-gen model, you may feel that six months is too soon to upgrade. Perhaps Apple thought the same, so it delivered a gentle rather than a killer upgrade, though the speed improvement over the last model is evident.
Faster processor; Improved FaceTime camera; UK-compatible 4G connectivity
Reduced battery life; Not much change from iPad 3; Too soon