One of the pleasant things about using Gmail on Android is that it’s entirely ad free. That’s about to change, however, according to Android Police, which recently dug through the APK file of Gmail for Android version 4.6. The site noticed that the new release packs several changes, though the most significant (or perhaps annoying) is the addition of advertisements, which have been present on the desktop for as long as we can remember but are not yet active in mobile.
Android Police noticed a few strings that suggest Google will allow you to save advertisements that apply to you as new messages. So if there’s a deal that interests you , you can save it and keep it in your inbox to take advantage of later. Other features include a card-based user interface, which Google uses for Google Now and other apps, and a warning that alerts you that you have unsent drafts, in case you forgot about them. The notification panel in Android will also populate generic images for contacts who don’t have an image set, instead of an empty white box.
There are a few other smaller tweaks pointed out by Android Police, though it’s unclear when they’ll be activated.