A new leak Apple may have already fenced off April 24th for its Canadian, and possibly international, launches for the iPad. Some Apple store workers in Canada have reportedly been told that the 24th and 25th are "blackout periods," or days when they can't voluntarily book the day off. Since Apple in the past has used these blackouts to prepare for the iPhone 3G and other major launches, it's believed that the company has already reserved the 24th as launch day and wants to guarantee staffing levels.