Well, that date is approaching fast. September 22nd, two days from now, those new guidelines will go into place.
Google's Ronald said in a Google Merchant Help thread:
On September 22, we'll begin enforcing the new Google Product Search data feed specification and policies, which we announced in July. If you've already made the required changes to your feed, we recommend running a Test Data Feed to make sure that your updated feed complies with our new requirements.
If you've not made the changes, we highly recommend reviewing the materials cited in our announcement and follow-up blog posts, updating your feed, and testing the revised feed using the Test Data Feed.
Starting September 22, we'll gradually begin enforcing the new requirements by removing items from Google Product Search that do not meet the new requirements and, in some cases, suspending accounts that do not comply.
Really, I have never seen Google make so many announcements, so many times, about changes like this. Which implies to me, they are taking this one very seriously.
Update your feeds asap.
Forum discussion at Google Merchant Help.