Seems it's intended to eventually fully replace the automod

The company calls the suite of tools “Rules Hub,” and the tools let mods decide what rules should be automatically enforced and what should happen when a rule is triggered. Rules Hub relies on LLMs to evaluate “whether a post or comment matches the intent of a rule,” which “allows Rules Hub to better handle nuance, natural language, and edge cases while preserving moderator control,” Reddit says in a blog post. Right now, many subreddits use tools from a feature called Automoderator (aka Automod) to take action on rules, but Automod’s tools “depend on exact keyword and pattern matching.”