No shock and awe here, Apple's already given us plenty of warnings, but we thought we'd drop you a friendly note to say that if you've upgraded to iOS 4 early, your copy of Winnie the Pooh is flying at you right this minute. Tipsters points out that they get a notification encouraging them to download the heretofore iPad-exclusive iBooks app, though they're finding they have to do it via their desktop iTunes client rather than over the air. Ah well, Apple's probably being extra cautious with moving those bi