Soon there will be MUCH more material online.
Various ministry leaders will see the movie, read the book and prepare a response. Use the following blog to network to various apologetic sites. http://apologeticshub.blogspot.com/
Some of them will create stand-alone websites as a complete response.
Jesus Family Tomb brings up Mary Magdalene just like Da Vinci Code.
You can get a Biblical response as part of http://www.davincihub.net/Websites.html
