Google has rolled out their updated navigation bar to their most prime web property Google.com homepage.
Google.com now features the same elements that appear on other Google properties. You can see your notifications and there is also a share box along with your profile icon.
You can now share to Google Plus right from the Google.com homepage!
The same elements are now available on most Google services like Gmail, Google Maps and others.
YouTube is one exception right now but we expect it to get this update in the near future.