I found an interesting bug on the iPhone. Perhaps someone else can verify.
However, you can press the home button to start over. I did so again with same results.
- App Store badge displays number of available updates.
- Click "App Store."
- Click "Updates" if it is not already open.
- Select "Update All."
- Cancel "iTunes Password" dialog w/o entering anything.
- Screen displays "All Apps Are Up to Date," clearing list of apps.
However, you can press the home button to start over. I did so again with same results.