Several people are complaining about motion sickness with iOS 7.
Regardless of what has been reported or rumored, there is a solution.
Apple has resolved this very easily and all you have to do to reduce motion in your new iPad or iPhone (or old one with iOS 7) is to do the following:
1. Go into Settings
2. Scroll to "General"
3. Tap "Accessibility"
4. Scroll to "Reduce Motion" and select "On"
This should resolve any issues around motion sickness.