Today, Google introduced a new version of the API that allows retailers to manage product feed content programmatically, as opposed to through manual updates to Google Merchant Center. It’s the first version update of the API since Google first launched it in 2010, before Google Shopping became a paid platform.
Version 2 of the Content API for Google Shopping offers these added features:
Version 1 of the API will be available until the end of February 2015.
More details on the latest version are available on the Google Developers Hub.