I think there is a good chance Honda may just stop importing the Fit for the North American market (given that demand in Asia is still very strong for this vehicle) and not sell the Fit in the USA until the Greensburg, IN plant comes online in 2008 to sell the next-generation model for the North American market.
It could also mean that Honda may expand their Alliston, ON, East Liberty, OH and Marysville, OH production capacity to build even more Civics.