Well because it is the 5 day forecast that is pointed right at it, it is still very inaccurate pass the "white" part of the forecast track, it could very easily go either East or West of that. However, the NHC likes to err on the side of caution and wait until they can know for sure before making any definite path changes. It does seem though that the opportunity for Ike to take the more north or WNW direction the NHC currently has in place has passed due to the weakness in the high pressure center over the gulf staying to far north. This will probably make the high pressure center push the path further to the west. I suspect the NHC is waiting until the last of their main models to update more to the western path before adjusting their official forecast.