Good question. I thought that the 0% for 24 or 36 months would disappear at the beginning of May. Well, at the end of the last segment (May 2nd I think it was) it stayed the same for the 2210/4000 ten series(0/36), then a few days later it actually got better for the 3000 twenty series (0/36).
In the spring the dealers were saying that compact sales were slow. Lately they've been telling me that they are picking up. Deere finance keeps things very quiet and won't release the rates until the old ones expire. So really, it is anyone's guess. Me, I'd go with history and guess that the rates will only get worse.
I ordered my tractor just before the rates were about to expire and went with 0/24 on a 3720. When the rates got better, my dealer had no problem changing me to the 0/36.