20 Things You Didn't Know About Serenity
4. It Was One Of The First Films To Be Released On HD-DVD
HD-DVDs was a brief disc format that ran from 2006 to 2008, and is primarily a High Definition version of DVD.
And, in fact, Serenity was one of the first to be released on such format. Its release coincided with the release of The Last Samurai, Million Dollar Baby, and The Phantom of the Opera.