I’m happy to share that we’ve updated our “Validation Rules” portion of our website! 
Aside from the visual enhancements to further align the UI with our Pinnacle 21 Enterprise product, this update also allows for a streamlined, more automated process for updating the content–cutting down on delays in getting the details out to our users. New and updated rule metadata is now reflected as soon as a new Engine is published.
Existing functionality like browsing rules by Standard and filtering by Engine still exist. These rule listings help identify which rules apply to which versions of a given CDISC Standard.
Please report any usability issues with our Validation Rules page by replying to this Forum thread.