I think this is new. I'm running iOS 7, beta 4, on my iPhone 5 and iTunes 11.1 beta on my MacBook Pro. When watching a video on the Mac with iTunes, if I go to the iPhone and call up the same video, it picks up right where I left off on the Mac. Later, if I go back to the Mac, it picks up right where I left off on the iPhone. It does this automatically, without having to sync the iPhone. It's a wonderful feature. Is it new, or did I just not notice it before?