If you're hoping to get your hands on Apple's new iPad on launch day but haven't already ordered, an Apple Store line may be in your future. Cupertino's US online store is now listing a March 19th ship date for all 9 variants of the new Retina Display-equipped slate, a full three days after the device's release. It's an almost expected occurrence at this point, with Apple having run into the same issue with the release of previous iOS devices in recent years. While no specific details have been given on in-store availability or customer limits as of yet, Apple's brick-and-mortar locations have traditionally had stock to sell on a first-come, first-serve basis — but you may want to watch out for any spontaneous Galaxy Note-inspired musical numbers.