Google Plus is now officially open to all, and comes just at the same time as Google opens a Hangout facility for Android phones with front-facing cameras. Punit Soni(Google+ Mobile PM) in a blog post stated:

“We started the Google+ project to help make online sharing more like real-world sharing. Of course, in life we increasingly share on the go, so over the past ~90 days we’ve developed Google+ apps for Android, iOS and the mobile web.

During this time we’ve made lots of improvements to the project, and in fact, the team just announced its 100th new feature overall (open signups). But our work is far from done, and today we’re bringing seven additional Google+ features to your mobile device.

Google promises more features in store for mobile users.