Google Maps for Mobile has been updated to version 4.0. This update includes the newest product from Google, Google Buzz. Buzz is a social integration and messaging tool that allows you to share updates, photos, videos, and more with regards to your location. If you still need further explanation, here is a video by Google explaining Buzz further.
Also, WMExperts is noting that the poor GPS location issue that affected CDMA devices has been fixed. You can point your mobile browser here to download the latest version! Happy mapping folks!