During today's Google I/O keynote, Google's Vic Gundotra said that Google+ would be getting 41 new features. Those new features were spread out across three key areas - stream, hangouts and photos.
Google is doing away with the old layout in favor of a multi-column layout that puts more emphasis on photos and video. The new layout will also sport "delightful animations" that see the sharebox and menus sliding around the UI.
Hangouts is still the major selling point of Google+, but Google has decided to spread the love a little more by releasing a separate Hangouts app. It's still tied into Google+, however, and features all the sharing capabilities of its bigger brother.
Finally, photos on Google+ are soon going to get a major facelift as Google adds a number of photo editing features right into Google+. The best part is that you as a user don't have to do anything. Features like Auto Highlight and Auto Enhance are automatically applied thanks to Google's advanced algorithms.
All the above features will be rolling out to all Google+ users over the next week. In fact, the new layout design seems to be live now.