Poor Google Plus has been in a tailspin for so long, it's refreshing to see something new being done with it. Over on WebmasterWorld they have a discussion going about what's been cut and what's been added. It's now mobile friendly and communities/collections have become the primary focus.
Google+ communities, in my personal experience, were the only useful or valuable part of Google+ left so it makes sense to me that they'd put a larger emphasis on them. Think this will get more people using it? Or is it just something to keep the folks who already use it happy? I guess the design is still being tweaked - it's a little ugly according to some users on Webmaster World :P