What Will Apple Annouce Tomorrow?

If you check out the apple website you will see this image on it. So it seems like they are hinting to a major announcement, but this is different then what they normally do. They normally have a keynote to show off their new products. Its will be interesting to see what they annoyance nonetheless, but my predictions won't be a new product or any thing like that. My two best guesses are The Mac App Store for iTunes or possibly the release of the new iPad firmware 4.2 or maybe both. What are your thoughts on what they will announce?!