I have played Google+ from the starting of the product.Frankly speaking,I don’t like the UI as it’s not so user-friendly and sometimes feel it’s too simple and even a bit ugly.

Maybe the Google+ team had heard a lot of suggestions and now the new UI has come into the desktop.It’s fresh,powerful and more usable.

I think more people will love the new look and once people love something,it will be more popular.Well done,Google!