The F54 Mini Clubman has evolved into a fully fledged wagon, with four full size passenger doors, a longer wheelbase, and barn doors for the trunk, all presumably to give the new F55 5-door Mini hatch a bit of breathing space.
Initial F54 Mini Clubman pictured below. Will be unveiled in full at Frankfurt Motor Show. Will be sold as either 2015 or 2016 model year car.