While the iPad doesn’t officially go on sale until Saturday, iPad apps have already begun to make their way to the App Store. Many of the apps you have seen and heard of before are making appearances, including Brushes and Twitterific. However, 9to5mac posted this video showing around 700 iPad apps approved by Apple. I guess those that have preordered the device, or plan on getting it at launch will have some time to start purchasing apps and get prepared for the big day?