Official iPad Availability
Apple has announced the official availability dates for the iPad:
[The] iPad will be available in the US on Saturday, April 3, for Wi-Fi models and in late April for Wi-Fi + 3G models. In addition, all models of iPad will be available in Australia, Canada, France, Germany, Italy, Japan, Spain, Switzerland and the UK in late April.
You’ll be able to pre-order both the wi-fi and 3G models from the Apple Store on March 12th, 2010.
I still don’t see iPads available for pre-order on Amazon yet.