It would appear that Arriva have decided to change the Route displays,at first i saw it on 2837,which made me think it was specifically that bus  which is used for the 555,but then i saw it being used on the 553 when i was doing my shopping in Wallsend, about half an hour ago i was coming back from my local shop and saw a decker on the 308 with the same display,i kinda like it,especially with having rubbish eyesight,you can actually see the route numbers again