Yes, you probably should get it now.
We (shops) can place orders until the end of December and get the goods at the current prices. So I would imagine that prices will hold steady at the retail level until all the goods that the stores ordered this month have sold out. But you know, everybody's going to want the black (and the white)...
I'd be interested to know whether most of the LQS's are going to raise their prices piecemeal, a color at a time as their lower-priced bolts sell out, or whether they will raise the prices of all colors of Kona cotton at the same time.