What is so new? It's OAuth 2.0 (see google+ docs: https://developers.google.com/+/api/oauth https://developers.google.com/+/api/oauth). OAuth 2.0 is supported f

What is so new? It's OAuth 2.0 (see google+ docs: https://developers.google.com/+/api/oauth https://developers.google.com/+/api/oauth). OAuth 2.0 is supported for a relatively long time by Google (the old docs: https://developers.google.com/accounts/docs/OAuth2 https://developers.google.com/accounts/docs/OAuth2)