BadgerPhil,
Don't know if the financing will continue April 1st but I know that this past year NH had many similiar deals that would "expire" then immediately after they would start another 0% deal again. Since the economy seems to be "weaker" right now I would imagine that NH would continue the financing after April 1 in order to keep new sales coming. Ask your dealer, they might know and might be willing to let you know. Some dealers don't want to tell you because they want to create that "sense of urgency" to entice you to buy now. I utilized the 0% for 12 month deal last year and really appreciated it.
Happy tractor hunting!
DaveV