Don’t mark up content that promotes widely prohibited or regulated goods, services, or information that may facilitate serious and/or immediate or long term harm to self or others. This includes content related to firearms & weapons, recreational drugs, tobacco & vaping products and gambling-related products.
According to Google, this new policy applies to all forms of rich results markup with immediate effect. This includes star ratings, prices, availability information and other SEO strategies they may attemept to cover.
Google Removes Gambling-Related Products and Services from Rich Results and online casinos.Google has also stated that it will not issue a manual of action for this new update and will simply remove the rich results from all search results.