DavidMerrick said:

The 1.0 versions of all three movies, which draw primarily from the DVDs and laserdisc footage, are all released. Harms has put out HD versions of Star Wars and Empire (2.5 and 2.0, respectively) that use the Blu Rays as their basis and use more 35mm footage. He's working on 2.0 of Jedi currently.

Actually, FWIW, the 1.0 versions were mostly HD-sourced as well, using the HD broadcast of the 2004 SE. 2.x were the first versions to use the Blu-rays as a source. The 1.0 versions were also much more heavily compressed than the 2.x series, but they were still HD.