The waiting, a great man once said, is the hardest part. And while seeing all of today's WWDC promises come to fruition will certainly take patience, iPhone owners can take some solace in the fact that the updates have already begun. At least a portion of the new functionality is now available by opening up the "Purchased" tab in iOS 4's App Store, revealing a history of apps that have been downloaded with your account, including those not currently on your device. Those not presently installed will feature a cloud icon, making it possible to re-download them onto the handset. It's not quite iOS 5, sure, but it's a start.