Just a FYI for anyone interested. They are starting to set up equipment along the canal for shooting the movie. We stopped and talked to the security guys sitting by it and asked what it was today and they told us for lighting. Hoping to maybe get to see them filming some from across the river.
Scroll down page:2 diff spots Bethlehem is mentioned: http://transformerslive.blogspot.com/
Then in 2nd article click on "the site"