I go to the International Quilt Festival in Houston, the last weekend of October or first WE of Nov each year. At the show, the major vendors offer deals on machines. Is there a major show coming up anywhere near you? If there is, I would make sure I knew what the dealers wanted for the machine, and then go to the show. The local dealers will either be there or will often make you the same deal you could get at the show.
The other option is to ask the dealers when there will be sales. Maybe they will tell you.
ps....I love the new machine too. By next year, I hope to have one.