How to get notification when Google+ is available for public or everyone?

Google+ is still in field trial and signup’s are only by invites. They open invites progressively only through users already in Google+.

Want to get notified / invited when Google+ is available for everyone?

Google has setup a online form which non google+ users can signup and get notified as soon as the network is available for everyone / public.

Here is the Google+ signup notification form.