The Ice Cream Sandwich version of Google+ leaked onto the web today, so you can grab it right now and check out some of its neat interface changes.
The update isn't a huge overhaul, but it does make some nice changes that make the app easier to use. The notification bar has been turned into a smaller button on the front page, the Circles page looks a lot better and adds some nice thumbnails and Messages are now called "Chords". You'll also notice that many of the buttons have been replaced with menus along the top that look just like the menus in Google's upcoming Music app, which was also leaked today. Again, overall, it isn't a major redesign, but it does look a bit nicer.
Google+ 2.0 is a free download for Android devices.