Plus a launch of iOS 5, with a revamped notification system, more developer API's, and possibly some UI reworks (iOS is looking pretty long in the tooth compared to things like Windows Phone 7)
Perhaps they'll also try to bump up the resolution to 720p, and add HDMI out. A reason not to is so they don't cannibalize iPad sales - but that's short-sighted, and historically not Apple's style.
We may also see the rumored cut-down, retail-for-$200 iPhone - my addition is that it will have a similar form-factor as the current nano.
Also, Apple added HDMI out to the current iPhone 4 via a dongle they announced as part of the iPad 2 launch.
They might not, but it would somewhat surprise me.
My brother is saying they will be integrating a credit card system. That could be possible.