Obviously the announcement of Apple's streaming service, launch date, shows, etc. Maybe some info on the premium News service (which, admittedly I haven't been following the news of)? Not likely, but maybe some hardware like new iPads?
The rumors of a new iPad mini has me pretty excited, but this is probably going to be a software/service show and I'm not really looking to add another subscription to my list.
If Apple bundles Music and TV together for $9.99 I may bite, depending on the offerings. Spotify just announced
that they'd be bundling Hulu with their Premium plan (also $9.99), so maybe they know something that we don't?