Google's social site is now open to everyone who has a gmail account. An API for Hangouts has also been added, so developers now have the ability to access the service for use in their apps.
A new update for the Android Google+ app is available in the Android Market starting today.
Yes, I wonder if it is possible to move your Cityville user account on Facebook to Google Plus, or be able to use the same Cityville account on Facebook and Google Plus. Starting with a new user account on Google Plus would be kind of time consuming.