On the Preview stream for Frankfurt Fulda Matt said the new GNT screen will be retrofitted to the BR 612. But that's just not true, the old super small GNT screen is still in place
"Will be." Not "Has been." I can imagine patching a single new feature into a TSW2 route which isn't even being remastered is pretty low priority when they're currently ironing out the bugs of their new title launch, give them time and it will come.
