With this new launch, people using Google Apps with access to Google Talk or Google Hangouts chat will now have the ability to create and join Hangout video calls for up to 15 participants. Participants will no longer need to ensure Google+ premium services are enabled, nor have a Google+ profile. Features such as sharing one’s screen to a team or automatically adding a Hangout to any Calendar event will also be available.
Before a Google+ profile is created, a Hangouts participant will be able to:
Start Hangout video calls with up to 15 participants
Include any external guests who have a Google account
Add, change or join a video call in a Google Calendar entry (coming soon)
Join or start a Hangout by URL or at g.co/hangout/ (and g.co/present/ to just present)
Please note that people without a Google+ profile will not be able to use Hangout apps other than screen share and chat, nor invite Google+ circles to a Hangout video call.
This enhancement will be supported in a coming version of the Android and iOS Hangout apps.