Well what do you know. Looks like you won't have to wait until March 19th for the new iPads to even ship. Everyone should have known that brick and mortar stores were going to get it before the ship date, or at least you should have known that. Walmart has now confirmed that it will begin selling the 16GB WiFi-only model tonight at 12:01am local time at all of its 24-hour stores. That includes both the black and white versions, as well as the now $399 iPad 2 if you prefer that.
If you do plan on getting the new iPad 3, you better make sure you get there before they all sell out, because there is a "limited supply".