They do, they show trains before they've even terminated now.There's a photo on Flickr from a group visit to the depot which shows what Hacman is describing although at the time of the photo it was just one section that has been removed rather than the whole unit(although that could be the case right now). Be interresting too see what will happen to this unit although did the prototypes received any similar treatment before getting the fleet livery?
If 4022 is at Webtec then what was the reason it went down to Bristol?
As for the upgrades behind the scenes and what us showing on the boards then I do agree that having Whitley Bay abbreviated seems unnessary but it's no real difference to what is present as I believe "This train is for the Coast(via Newcastle) ends at Whitley Bay where it then says This train is for St James and vice versa for the opposite direction. I suppose the idea is to stop passengers going all the way round the coast to get to Wallsend for example when there is a quicker way via Monument P3 but abbreviating it does not look professional.
Apparently the boards at Monument P3 now show when the next train is due. Is this true?