Apple said today its much anticipated iPad device will be available in the U.S. on Saturday, April 3, for Wi-Fi models and in late April for Wi-Fi + 3G models. All models of iPad will be available in Australia, Canada, France, Germany, Italy, Japan, Spain, Switzerland and the U.K. in late April. Beginning March 12, U.S. customers can pre-order both Wi-Fi and Wi-Fi +3G models from Apple's online store or reserve a Wi-Fi model to pick up on Saturday, April 3,