You can download the updated version directly on your device through the Google Play Store or by using the link which follows:
The Google Keyboard 1.1 update has the following new features and improvements:
- Added long-press numbers to the top row of tablet layouts.
- Tuned keyboard layouts for some languages.
- Bugfixes and stability improvements.
If you cant wait for the update to reach your devices you can also download the APK by following the source link below.
source - Android Police