LeeThorogood said:
I believe this is just the 2004 version of ESB colour corrected and with the 1997 LD 5.1 surround sound.
In the very least, there is also the original emperor and a flipped shot of medals on Imperial officers' uniforms that was discussed in the restored theatrical version thread. What other differences do you believe there were between 1997 and 2004 that Adywan left unaltered? It seems pretty close to me.
I can't help you with anything else. I'm sorry.