The Google+ client for Android powered phones has been just updated and the new version brings some new and welcome features to the table, aside from the usual bug fixes and performance enhancements.
Once you grab the latest version of Google+ you will be able to start a hangout from a Messenger conversation. You’ll also notice the new design of the photos album view as well as people suggestions when composing a Messenger conversation. There are new icons to show which photos have been uploaded to Google+ via Instant Upload and you will now be able to leave one-to-one Messenger conversations. Check out the source link or consult the Market application on your phone to update.