Google is adding a good deal of the functionality from Google maps to Google Maps for Mobile. This includes the ability to access and interact with different layers like Traffic, My Maps, and Search layers at the same time.
Google has frequently touted Street View's ability to help folks scout out addresses or entire trips, and most people have accepted its usefulness in these matters. Only Street View would sometimes remain tethered to desktop computers while its users were wandering around, and so it's nice to report that Street View has been introduced to Google Maps for mobile.
Carefully weigh how much you dislike typing on cell phones against how much you want to keep private whatever you're researching. Then, if you dare, check out the new voice search abilities connected to Google Maps for mobile.
The addition of transit info to Google Maps might have seemed handy when, in the comfort of your home or office, you were trying to establish plans. It's now handy in a more literal sense, too, since transit data has become available through the new version of Google Maps for mobile.