Google Maps API v3

In the laboratory, Google posted a new version of the API Maps V3 . According to the developers, it is focused on working with mobile devices, but so far has a smaller set of functions, compared to the second version. (Maybe that's why she didn’t work for me :))
From the innovations I noted for myself the following:

• The new parameter "sensor", which allows the application to use the GPS sensor.
• now no key is needed (for what it is)).

P / S: Maybe this is not news, but now you can use AdSense in maps.