we moved to a new subdivision 2 1/2 months ago that I can't map yet. How often are updates?

Answer 1

It depends on the city supplying the information, the service providing your street mapping and the software or device you are using. It can be quite a while in the worst case. You might send a message to the named mapserver provider, like NAVTEQ shown at the bottom of Google Maps, as well as the other aspects of providing it to you.