Android 5.0 Lollipop is coming soon to many devices and is even already on a few like the Nexus 9 and Nexus 6, so it's no surprise to see another heavily-used Google app — Google Maps — get an update to bring it into line with the new Material Design styling of the updated OS.
Overall things generally work the same way, but you'll find many more instances of swaths of color. It's very much a Material Design look for Maps, and it works well, though there's plenty of empty space to it.
Google Maps is getting new services integrated with the latest update, however. You'll find Open Table for making restaurant reservations and Uber for calling for a private car to get you from A to B (and we suppose you can use Google Maps to give them back-seat directions too, if you're into that).
The new version of Google Maps is rolling out now in Google Play; once you've got it be sure to let us know what you think!