You can download the update directly on your device through the Google Play Store or by using the link which follows:
The Google+ for Android update has the following new features and improvements:
- New Google+ Photos features keep photos organized and looking their best
- Make your photos look even better with Auto Enhance*
- Browse highlights from all your photos*
- Share short animations, panoramas, and more*
- Discover interesting content via related hashtags
- New profile design, includes the ability to edit more profile fields
- See your friends’ location on a map
- Hangouts has moved to it’s own app for messaging and video calls