Google Maps API v3

In the laboratory of 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 it has a smaller set of functions compared to the second version. (Perhaps that’s why it didn’t work for me :))
Of the innovations, I noted for myself the following:

• new parameter “sensor”, which allows using the GPS sensor in the application.
• Now the key is not required (why would it be)).

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