Cadillac Fairview has stated that it'll be a lifestyle brand hotel, but don't know who, or if it'lltake all of the floors.
There's no development permit application as far as I know, so no change in use (though existing zoning might also allow office space) and no change in square footage, so no filling in the bay window recesses.
Leftcoaster at SSP says expect a lot of scaffolding - so probably a reclad of the whole tower but don't know with what? ie precast and glass or all glass?