Apple finally announced that it will release the Wi-Fi version of its long-awaited iPad on Saturday, April 3rd (full press release available here) in the U.S. with 3G-capable units arriving in late April. All models of the device will be available in Australia, Canada, France, Germany, Italy, Japan, Spain, Switzerland and the UK come late April.

Users will be able to pre-order both the Wi-Fi and the 3G-capable units from Apple’s online store come March 12th or reserve a Wi-Fi model to pick up on Saturday, April 3, at an Apple retail store.

Prices are slotted at US$499 for the 16GB unit, US$599 for the 32GB unit US$699 for 64GB unit. The Wi-Fi + 3G models will be available in late April for a suggested retail price of US$629 for 16GB, US$729 for 32GB and US$829 for 64GB.

Stay tuned for additional details as they become available and let us know if you plan to snag an iPad at launch or wait a bit…