Yeah, people still use Google+
Looks to be transitioning to Google's Material Design, using Polymer and more uniform design similar with their other products like Google Photos, Play Music, etc. and a huge step up from what they have now.
To get it right away, just go to https://plus.google.com/ > hit the top left icon where it says home (should be right under the logo) > Settings > Manage Google+ Account (somewhere down the page) > Hit the search bar. Boom, you have it.
It doesn't seem to stick after revisiting the page though so that might happen after the full rollout.