It's official: Apple will begin selling iPads on Saturday, April 3rd, with pre-orders beginning on March 12. Sales will be done through "selected Authorized Retailers."
Note: this is for the basic Wi-Fi model. The 3G 'Pad is promised for late April, but the House of Jobs doesn't have a date set in concrete yet. This is also for the USA release: elsewhere in the world, both the Wi-Fi and 3G's have the "late April" disclaimer. Also, the Wi-Fi pad can be reserved online, and picked up at your nearest mall's Apple Store.
(Speaking of which: feel free to share any stories/photos of store feeding frenzies you might encounter…)
App availability — not to mention how many devices are hitting the retail channels on Day One — are not known at this time.