UPDATE: Click here for iPad Air 2 pre-order info.
UPDATE: International (non-US) customers can pre-order the iPad beginning May 10, 2010, through Apple's online store.
Both the WiFi-only and WiFi + 3G models of the Apple iPad will be available for pre-order beginning on March 12th, 2010.
Customers who decide to pre-order will be able to
1) have the iPad shipped from Apple's online store
2) reserve the iPad for pickup at their local Apple store