While Apple talked about a few new iOS 6 features during the keynote here at WWDC, there are always plenty of new features hidden in the operating system, some that we won't even fully hear about until the OS actually goes out to the public. But here's one found by the guys over at the iDownloadBlog, presumably in the developer beta.
It turns out that the big silver metal buttons in the Music app on the iOS 6 beta not only have reflections showing on them as if they're shiny, but will actually look like they're reflecting at different angles when you tilt the iOS device back and forth. There's a video to watch of it if you want, but you won'