This mysterious black DAF truck was spotted by one of our famous iepieleaks spies out there. The truck was seen in Scandinavia where it was on its way testing new items. One of them is the new front. New European rules make it possible in the near future that trucks grow a bit longer to improve safety and airflow. This DAF does have that new front that sticks out maybe 20cm. DAF uses the headlights from the previous models on this test vehicle. The lower grille looks like it is masking something else behind that but that is just a guess.
Another detail on this DAF XF is that this truck is also testing the new rear view camera system. This year Eurpean laws make the use of camera’s in stead of mirrors possible. We do espect a lot of these systems on the IAA exhibition, later this year in Hannover. If DAF is also showing the new front end is just a wild guess.