It looks like TNT aim to deliver on the estimated date, although there have been instances where they've delivered ahead of schedule.Mines is now in Arnhem too, is it likely to stay here a while then? Delivery estimated 21st (originally 20th)
Also, it could also depend on when in the week, it arrives at either Arnhem or the Initial UK hub. In my case, it arrived at Arnhem on Friday and didn't move until the Monday, possibly suggesting no weekend movement from there.