Apple's online store has posted the iPad's Camera Connection kit available for pre-order with a shipping date of "Late April". This kit comes with two different adapters and will allow you to transfer digital photos directly to the iPad via USB or SD Card.
At the time only a few of Apple's iPad accessories will be available on the April 3rd launch date including the standard dock and VGA adapter. The iPad's Keyboard Dock is showing a "Late April" shipping date and Apple's 10w USB iPad Power adapter currently shows to be shipping in May.
Thanks For the tip Ellie!