The bits says that the 2004 DVDs are not the final versions. The bits have been right about everything on these DVDs and it really is stupid to continue questioning them. The thing is all the changes in the 2004 version are not really expensive. Deleting matte lines and cleaning up thing are not to pricy. All new digital changes are simply prequal effects added in. Lucas had no time in production of Episode 3 to work on new effects for the originals. Which is why for the 30th anniversery you can bet there will be new versions of the movies.