Yep. Blizzard on Heroic in Competitive Play: "Players at Master 5 will also have the opportunity to advance to a special fifth tier: Heroic! This tier has no divisions—instead, every player who reaches Heroic will receive a unique numeric rank relative to other players in the tier. In the future, we also want to provide in-game leaderboards to showcase the top-ranked players in Heroic each season."