Mike O said:
So basically, the 2004 release was a just a placeholder to make OOT fans shut up?
Apparently so. If they hadn't run out of time, back in 2004 you would've been hearing samples of James Earl Jones' voice during the climatic throne room "electrocution" scene of ROTJ and the krayt dragon sound effects in ANH.
Along with all the other wonderful additions that we've come to love (sarcasm mode)