Google has recently updated Google Maps for Windows Mobile devices to Version 3.20. Enhancement made (at a glance) is addition of the option “layer”. BTW, Latitude on Google Maps is already available (with a twist) on iPhone.
So, what is the difference in this version? As mentioned, it has layers. As you can see in the above picture, it has options to turn on several layers. For example, Transit Lines and Wikipedia. Below is a picture after turning on Wikipedia.
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And if I click on the Wikipedia logo, it will grab the information from Wikipedia.org as shown.
To get the latest Google Maps software, click the below link (or key into your Mobile browser)
http://m.google.com/maps
After installation, you should get this version.
(source)