As far as orders go, I believe only a limited amount will be printed so I suggest you pre-order one if you want a copy. As far as the specifics go, I'll let the man speak for himself:
If you're interested in a copy, Portraits in the Paint is now available to pre-order. I am taking orders until October 26th, at which time I will put in an order to the publisher for the books and head to the print lab to print off the etchings. I will personally sign, number and ship all books once they arrive from the publisher. Your order will be shipped no later than November 14th.If you want to learn more about the book and order a copy, swing by Joel's website and place your order.