First I would like to say, Awesome Site! :)
Now for my first post, hope I'm not attacked for it, LOL.
Looking at these four images I have to say that I think, even if it's the 2004 source, that they have definitely altered/tweaked/messed with the copy quite a bit for the blu-ray release.
Vader's lightsaber is MUCH different in the direct capture for the blu-ray than in either the 2004 or the Original Version.
The Original Version has a fat blade with a red/orange tint to it while the 2004 version is a fat PINK blade. The blu-ray versions is a MUCH thinner blade that has clearly been altered and appears to have a "redder" tint to it than the '04 version.
I'm still drooling over my pre-order that I have, but I understand a lot of the angst. I see this being an HD version of the 2004 set, with some tweaks to try and make it "somewhat" look like it SHOULD HAVE.
:)
PS I also noticed the "blu-ray preview" video makes it look much more pink than in the direct capture.