- layers support so you can have satellite view, simplified map, public transport and even traffic information
- GPS tracking and directions
- Places search with Place pages and geo location data
- Driving mode
- Imperial & metric measurements
- Zoom buttons
gMaps updated, still the best option for Google Maps on WP7
For those of you on Windows Phone, Bing is your default maps provider, but maybe Bing just doesn't do it for you and you need a more Googlish solution. If so, gMaps is the way to go. gMaps is an unofficial Google Maps app for WP7 that offers a number of nice features.
And, there are some extra features that not even official versions of Google Maps have, like theme support and the ability to take and share screenshots.
It's definitely a nice app, and there is both a free version and a paid ($1.99) version if you don't want display ads.
gMaps free version (Zune Market link)
gMaps paid version (Zune Market link)