A small update should be making its way to the Google Play Store soon in the form of new app download badges. The new badges will be prominently displayed on an app's landing page, showing how many times an app has been downloaded. The color-coded badges take the place of the miniscule plain text that previously showed an app's download number.
Coming in grey, blue, green, and a red/orange, the new badges will be found right next to an app's star rating.
The new badge system really adds nothing in terms of functionality besides more prominently displaying a number that was already there. The badges are more eye-catching, which could more easily sway you to download a popular app.
If your phone is running version 4.9.13 of the Google Play Store, expect to see the small change appear on app pages soon.