The Next Dimension of Google Maps event live stream is, uhm, streaming live.
Update: The live stream for me isn’t streaming, but Mashable has details of what’s going on (or by the time you read this, has gone on).
Offline mapping for Android phones, Street View for nature trails and 3D Google Earth maps are all improvements coming to Google Maps in the near future.
Also Macworld “confirms” that the new Google Maps will be in iOS6.