I'm hoping for iTunes X 64bit, renamed to Apple Marketplace, containing App Store (mobile and desktop), Video Store and Music Store...perhaps a Games Store so they can compete with Steam...mobile and desktop.
The app will store it's library in a new folder in the home directory named Marketplace (it will basically be the iTunes media folder just up a few levels).
You will also be able to store videos and music off site say on a NAS.
iTunes will return to being a music player, QuickTime a movie player, both of which integrate with Apple Marketplace.
This = awesome. At least I think it would be.
Apple TV could be much the same but can sync with Apple Marketplace over network. It has apps, like for example in England it could have BBC iPlayer (lol), 4oD, Five onDemand, LoveFilm, SkyPlayer etc.
It will allow playing of files over network, I.e those stored on a NAS.
And if we are lucky it will natively allow playback of multiple file types like mkv and divx avi.