Google is now allowing Android users to sign up for beta testing future upcoming releases of Google Play Services and Gboard. Once you sign up for the beta program for the respective apps on the Google Play Store through the links mentioned below, you will automatically receive updates that might be potentially unstable but will be packing new features.
Gboard was formerly known as the Google Keyboard. The smart keyboard allows one to quickly share GIFs, emoji, and do a Google search right from within the keyboard.
As for Google Play Services, it is more of a system service that is used by millions of Android apps out there. Google also uses Play Services to sometimes add new features to Android device. By doing this, the company is able to avoid having to update the whole OS to roll out handy new features to all Android devices out there.
You can sign up for the beta program of both applications by becoming a tester through the links below.
In case you want to leave the beta program down the line, you will be able to do so by visiting the listing of the said apps on the Play Store. Alternatively, you can also visit the links above to unenroll from the beta program.[Via Reddit]