As I huge Star Wars fan I was incredibly excited to hear of the release of the entire Star Wars saga as digital downloads! Available of course in this format for the 1st time ever and it happened on April 10th. They are a MUST OWN for any avid fan...simply put they are re-mastered, high definition digital versions...not some bootleg off of the internet or digital copy you fabricated in your home copying from your VHS tape to your computer.
For more info and a bit of insight...check out this article from Yahoo Movies. Also...here are the links to the movies from my favorite online movie retailers...Amazon and iTunes. May the Force be with you!