This is more or less what iOS 7 will look like on iPad. It was done in an emulator.
Of course, Apple did say that iOS 7 iPad betas will become available in the coming weeks, someone has figured out how to make it run on an emulation. It looks okay so far, but there are definitely some features that will obviously not be in the final build, such as Flashlight, which would be 100 percent useless on an iPad as it has no flash at this time.
Still, it will give you a sense of what things may look like if you want to check it out or start developing iOS 7-compatible apps for iPad.