Get excited, tablet lovers. Apple is expected to release the iPad two next April, a year after releasing the original, according to one analyst. The new iPad will likely be similar to the first, with similar storage capacity and functionality. The key difference between the two versions will be a dual camera functionality, allowing users to use the video-chatting software Apple introduced with the release of the iPhone 4 this year. Apple has sold 7.5 million original iPads, and will likely sell 6 million units of the new version by the end of next year.