You might just be seeing a new version of Google Maps in your Play Store downloads today - Google has updated the app from version 7.3 to 7.4. There's not a whole lot of new stuff going on inside, certainly not compared to the cavalcade of UI changes that happened earlier this year. A few tuned gestures, a few refreshed UI elements, and that's about it. APK downloads below.
If you're a regular Maps user, you'll notice that the one-finger zoom gestures have been reversed.