- reviews for places now contain more detailed ratings of individual qualities, such as food, service, selection, atmosphere, value, and more
- public transit stations now contain schedules, making half of the public transportation apps out there instantly obsolete, especially considering that Google Maps on Android supports getting directions via public transport
- adding friends in Latitude, which is Google's version of foursquare, is now very easy - in fact some of you (*cough* @Stericson *cough*) have been doing nothing but adding Latitude friends all day
Overall, excellent update, Google!
Source: Google Mobile blog