It was announced that he would work with Laura Bush's ghostwriter to write one soon after he was elected to the Senate.
http://www.boston.com/news/politics/politicalintelligence/2010/04/sen_brown_to_wo.html This is not like previous MA Senators - where Profiles in Courage and Kerry's books are not about the Senator writing them or the Kennedy one written after about 40 years in the Senate.
I wonder if his 15 minutes is up yet. His story is really just not that interesting. (Now, an autobiography written by the Senior MA Senator would be fascinating, but he is too busy actually doing important things. )
The Boston Globe says the book tour will be in MA.