Maybe they're sold so no need for a centre? Maybe they're doing a complete reno? Looking through the windows there is insulation being pulled down, I saw a guy pulling out wiring the other day. I'll take a peek again later today.
ETA: This afternoon, there were some construction guys hanging around outside the centre, although they could have been from the York Harbour site (it's just across the road). About half of the inside of the centre, from what I could see through the windows, has been pulled apart.