This is a significant move for Google+. Horowitz demonstrated a prototype of the Google+-connected Flipboard app on an iPad but didn’t say when it would arrive or when Google would open the Google+ API to other developers.
Opening the Google+ API would allow third party software developers tap into the service and develop apps for it.
Horowitz also said Google+ would never contain ads and that Google+ tablet apps are being developed. Controversially Horowitz didn’t give an exact number of Google+ users. He said they were in the hundreds of millions, unlike Google CEO Larry Page, who recently said there were 170 million active users.
The video below shows how Flipboard works, but was made before the announcement regarding Google+.