The latest word I have is that the train will start work at 8 AM but will work in Saint John first. I assume they will go to mile 0.0 by Harbour Station and work west from there. I have no idea if they will do the port spur or not. I believe they will then proceed to McAdam but keep in mind that they have to avoid the eastbound freight.
Given last year's TEC train I would GUESS they would be on the mainline by noon and into McAdam by 2 PM.
Hopefully I will have updates for you tomorrow. I will not be chasing this train but if I get any updated information I will post it here.