WB has decided to only honor the Digital Copy for 6 months. If you zoom in on the back of the Blu-Ray you will see an expiration of the middle of September. I am a fan of this movie in the Harry Potter series, but please save your money and buy the single disk addition and don't give WB any additional revenue as they have decided to screw the purchaser by no longer honoring the Digital Copy because it was "a limited time only," but their are still happy to sell it to you the purchaser!