The iOS update brings Snapseed basics to the app
For the Android version of Google+, the update offers a new stream design for both comment previews and swiping through photo albums inline, more text is displayed up front from both the original message and comments, and with image previews rarely cropped, you will be able to see portrait photos "in all their glory". User actions like +1, reshare and comment are now displayed in a manner that makes them easier to see. On both desktop and Android versions of the app, you can arrange to have your current location shared with certain circles. When someone with your permission visits your profile, they will see your current location under your name.
Both the iOS and Android app now have the ability to adjust the volume of community posts in your home stream. The update also brings the ability to invite people to a community, or re-share items to a community. Community managers now have member search, content moderation and report-remove-ban support.
For Android, this is version 3.6 and for iOS it is 4.3. Both are free downloads from their respective application stores.
The Android update allows your current location to be seen on your profile