Yup, notifications look viable now. I barely grasp the notion, having shut off almost all notifications from sheer annoyance.
And Match will be hard to match. Google and Amazon addressed the “put your tunes in the cloud” issue by ignoring publishers; Apple asked nicely and wrote some big checks, so now syncing music libraries is a matter of minutes, not weeks. Amazon will be hard-pressed to ask publishers “ok, can we make arrangements like Apple’s?” after blowing ‘em off before.
Stuff you buy from Amazon can be automatically added to Amazon’s Cloud and accessed from whatever device you want. What’s the difference?