^ Your calls are in vain. My neighbour who was directly involved in the logistics of planning the move knew only what was directly related to her job. Once her team green lit the studios her job was done and it was up to Citytv (or Rogers) as to when to start using the studios.
You'd have to find the people directly involved in the exterior renovation to get any info.
All I've been able to find out about the exterior was through a second hand source. It was that major work is still left to be complete, mostly on the tower's base which would be adorned in red trim. There's also an LED ticker coming across the top/front and around the tower.
As for the HVAC units being covered, common sense says: of course. They wouldn't put so much work into making the building look good and then leave the HVAC units exposed. At the very least, a corrugated aluminium cover will go up. They just started work on the exterior of the patio level so that should involve covering up the HVAC's.
It looks like it'll be a while longer after they move in before the building is complete.