I've heard rumours that Woodgreen Community Services might be offering services for seniors in this spot.

EDIT: Found an updated image from this month, showing where Mandy's will be! I don't know of any other confirmed tenants, but here is a map (from a CBRE slide deck) that shows the retail spaces. There is supposed to be retail all the way down Trinity Street.

I live in one of the Mill St. buildings and while I can't find the street plan/blueprints anymore, I can confirm that DSCToronto is right. The now dug-up laneway was temporary for garage access and they are supposed to be putting in a wide sidewalk adjacent to the existing buildings with...