I presently have an Ipad 2 and my wife loves it! Well, it's time for her to have her own Ipad, but I'm undecided whether to purchase the Ipad 4 or wait for the 5. Anyone know if there's going to be a dramatic change with the 5? I'm leaning toward the Ipad 4 but I don't want to look back in six months to learn that the 4 has been outdated. Thanks much for any input.