Jury is out on the new maps.  The satellite images are newer than what is on Bing or Google though.

Siri is noticeably better than it was previously. I was able to ask “Where’s a good Pizza place around here?” and it got me a list.  I asked it “Are there any new Bruce Willis movies out?” to which it found the Expendables and The Cold Light of Day and where they’re showing.

I haven’t noticed anything else.  I saw Passbook (the new app) but can’t tell you if it does anything useful other than in theory.

The full change log can be found here.