Apple today sent out and email to the developers informing them “iPad will begin shipping soon and your opportunity to be part of the grand opening of the iPad App Store starts today. Submit your iPad app now for an initial review by the App Review Team and receive feedback on its readiness for the grand opening.”

To get their apps considered for the grand opening of the iPad App Store developers have to submit their apps to Apple for initial review before Saturday, march 27, 5pm PDT. Only apps submitted before the deadline for initial review will be considered for grand opening on April 3rd. You can get more information about developing and submitting application for iPad on Apple’s developer website.