EA has announced that C&C: Rivals has been launched worldwide and should become available in your regional Google Play store over the next 24 hours.
“BEFORE updating to the Live Version of the game please be sure and Link your account via email, Facebook or 1st Party system (Google Play Game Services for Android). If you are currently playing on the HockeyApp “ExternalBuild” version of the game, you should link your account progress and then delete the app from your device before you install the live version.” – EA
Check out our hands-on during Gamescom! And download the game here: https://play.google.com/store/apps/details?id=com.ea.gp.candcwarzones
Source: EA Press email