Usually the patent itself moving around is for the examiner to access claim details etc etc...most if not all of that can be ascertained through the computer system they have implemented, but many newer files may not be up to date. The movement of the patent itself usually doesn't mean much...unless...you see the reexam moving right along with it...the focus on the patents now is the actions (incl. movement) taken on the reexam...those are the significant items to watch. may be soem movement of the reexams shortly also...that wuld signal the examiner is nearing completion of his findings.