Bill Hunt has his review of the Episode III DVD here:
www.thedigitalbits.com/reviews3/starwarsepisode3.html

He is also reporting that Rob Coleman of ILM told him Yoda in Episode I will be redigitized to fit the look/technology from Episodes II and III. Coleman also told him that the puppet Yoda in the Original saga will never be replaced with CG.

Also, it was reported that George Lucas is finishing the script for Indy IV this week. Whether or not that is a good thing is up for debate. Part of me is excited for the film but I have to wonder about the 10+ year delay when the film was in limbo. 60 year old Indy cracking the whip against those pesky cold war Russians? Who knows though, Lucas and Spielberg might be able to pull it off.