With the addition of the air taxi scene on Coruscant, they changed the building the Queen, Palpy, and crew went to for the Pre-Senate Conference scene.
In the Original Version, the exterior shot of the building is the same one we see in ROTJ: SE as Palpatine's Imperial Palace.
In the Extra Crispy Version (DVD) you see a large gray building with a flat-top, and you can even see the balconies around its perimeter that Maul and Sidious were walking earlier in the film.
You see this as the air taxi lands and right before Palpatine's speech to the Queen "The Old Republic is not what it once was..."
Seen it? Do you like the change they made to using another building? Wazzup?