Gimbal SDK V4 for Android is here! V4 adds support for Firebase Cloud Messaging for push notifications and removes support for Google Cloud Messaging (GCM). Google has deprecated GCM in favor of FCM, and may discontinue its functions as soon as April 11, 2019.
If your app currently uses Gimbal SDK V3 and GCM for Time-triggered or Instant Communications, you will need to migrate to V4 to continue to receive push Communications after Google shuts GCM down. Please refer to our V3 to V4 Migration Guide for details.