One person noticed that Beru Lars' voice was different from what he was used to.
Several noticed the needle on the interrogation droid.
The same group that gasped when the DS was revealed also marveled at the fact that Greedo could blink and had other facial features. They also liked the music during the light saber fight, and were again stunned by the graphics in the battle briefing and on the hologram table in the situation room.
I'm interpreting here, but their message to Adywan seems to be a heartfelt "Well done!" When I told one guy that this was actually the next-to-final version, that it was still a work in progress, he was amazed.
More for myself, and speaking for those of us in this thread, we're all [except for the occasional unwashed heathen] excited by your work, Adywan, and eager to see the DVDs.