Google gave us a little sneak preview of Google Keyboard v5.1 in the Android N dev preview back in May. You could sideload that APK on other versions of Android to get the new themes, but now the final build appears to be hitting the Play Store. As with all Google releases, this one is staged. We've got the new version available for sideloading, though.
The big change in this version of the Google Keyboard is the vastly improved theme selector.Read More
Google Keyboard v5.1 (originally bundled with N preview) is rolling out in the Play Store [APK Download] was written by the awesome team at Android Police.