The catch? Developers or brands can only send these notifications to users who have provided their consent. So you’re safe from receiving a barrage of promotional or marketing pop-ups if you opted out.
Speaking of which, developers must also provide users the ability to opt out from receiving these push notifications in their app. Furthermore, Apple adds that it will revoke privileges if developers abuse these services. Additionally, the company is also expecting developers to use their official API to gather user reviews and ratings. Therefore, disallowing them to use custom review prompts for that purpose. (Source: Apple via 9to5Mac)