I just ordered it. I found something to buy with it. Shipping estimate is March 23, 2009, almost a week after release date.
I ordered the DVD by itself and got my confirmation back saying "Delivery estimate: March 19, 2009". (Of course, I went with "Standard Shipping" - an additional $2.98 - so that's probably why there is a date difference.)
I'll give Amazon a lot of credit, especially when it comes to customer service. I've ordered quite a few books and DVDs from them over the past few years and I've only ever had two problems, both of which were resolved quickly. The first was the price discrepancy on Volume 4, and they refunded the difference pretty darned fast, and the second was a puzzle book I ordered from them last month to give as a Christmas present which apparently never made it past the Post Office in New Jersey. When the book still hadn't arrived several days past the due date I contacted Amazon through their site; the customer service person who responded initially kept an eye on it, and when it still didn't show as delivered a day or two later he (or she - I never did know which) had a replacement copy shipped out via UPS to make sure that I got it in time.