Google Shopping announced
that it will be updating the feeds specifications, which is a part of the new
Google Shopping rollout that is based on the product listing ads. The changes
will have an effect on the accounts globally.
Google is not making all the changes available at one but it wants to give enough time to merchants to adapt themselves to the changes before officially releasing them.
The change will take place on July 15 in the U.S. and September 16, globally. The enforcement for other accounts in the U.S., UK, France, and Germany will start on July 15 and on September 16, globally.
Here’s the complete list of Product Feeds Specification: http://support.google.com/merchants/bin/answer.py?hl=en&answer=188494#US