Last November, I posted on the proposed 1,000 foot tall tower in Winthrop Square. Well, those plans may have changed a bit: Architecture Magazine reports that Renzo Piano, the renowned architect that designed the planned building, has quit the project. "A senior executive at Renzo Piano Building Workshop in Genoa, Italy, yesterday said the split involved a dispute over creative control of the tower." Boston-based architect CBT/Childs Bertman Tseckares Inc. will take the project over. What remains to be answered is what may change now that Piano is gone. As they say, time will tell.