Drupal Academy has released a new tutorial focusing on adding custom validation to content-type fields in Drupal 10. This tutorial delves into the utilization of hook_form_alter, a key hook in Drupal development, to implement custom validations effectively. Viewers will gain insights into the significance of hook_form_alter, the process of adding custom validation to content type fields, and implementing specific rules such as minimum character limits for title fields. The tutorial aims to assist Drupal developers in enhancing their customization skills and empowering website administrators to enforce user input rules effectively on their Drupal sites.