Apple has updated their online store with a shipping by date of May 7th for the iPad 3G.
Thankfully the May date is only for new orders. We received the following email assuring us our iPad 3G would still be delivered in late April.
----- To Our Valued Apple Customer:
Thank you for your recent order of the magical and revolutionary iPad 3G.
We would like to confirm that your order will be shipped in late April as communicated at the time you placed your order. You will receive a confirmation notice when your order has shipped.
You can get up-to-date information about your order, including shipping status and tracking number, at http://www.apple.com/orderstatus