Warner Bros.' Harry Potter and the Deathly Hallows, Part 2 with UltraViolet digital copy will be a true test of the format when the Blu-ray Disc releases on Nov. 11, 2011. UltraViolet is a cloud-based digital library that allows you stream or download movies you have license to. You'll be able to tell which movies or TV shows are eligible by the UltraViolet logo on the product, online and in stores.