How do I drill in to calendar information from the notifications screen on iOS7? Lock screen-> pull down notifications, see "Tomorrow, there are 2 events scheduled and the first one starts at 11.30"

but how do I view them?

No amount of poking or swiping will open this up (unlike say weather information)

Is this a bug or is there some buried setting I don't have set?

Yeah yeah, I could unlock the phone and go to the calendar but it sort of defeats the object.
There’s no way to view tomorrow’s events from the Today view. If you’d like to be able to do that, you should file an enhancement request.