I like changes, but not very frequent changes.
I took me a lot of time to get used to Xcode 4 after upgrading iOS from 4 to 5 when I started developing my first app a few months ago. Should I upgrade to iOS 6 now?
I just submitted my third app without submitting iPhone 5 and iPod touch (5th gen) screenshots. :-)
I will wait for a few days to see any updates needed for my existing apps.
Some interesting articles:
Here's How iOS Apps will look on a Taller 4-Inch iPhone 5 Display?
Should you upgrade to iOS 6 today?