Not in a debate as to whether its a beta, evaluation or final version, but here is another bug/feature. Hope Fuji listening.
In Aperture priority with Auto iso, setting exposure compensation causes the exp comp marker to display in yellow. Thats OK.
But when you do this in manual exposure (new feature in FW4) it is displayed white and normally shows the compensation set on the Exp Comp dial. When the camera cannot get the correct exposure as iso cannot increase/decrease any further the exposure compensation display then shows how much under exposure is measured, but the marker is still in white. So you get no indication of whether the under exposure is what you selected or not. Could fix by changing marker yellow when it matches dial.