Thanks Joan! They've sent out review copies, and in their note to me said that it has a March 2010 official date, but that they are actually selling them now. I'm not sure if that means just through their website or Amazon as well.
I do find it curious that there are already speculators listing "used" copies on Amazon shops for more than the purchase price. I wrote a book about Mack Sennett, not pork bellies!