Just to keep things on topic (I know you just edited/reposted your comment, but my not finalized comment still stands)
Well considering that Solow is demolishing 35 w 57th without plans for it/ the lot and only has that one lot, its possible that Vornado and LeFrak are waiting for Solow to possibly sell it.
Also (as it pertains to your previous comment), even though this one could also quite possibly be a mixed use tower, I wouldn’t compare it to 41 w 57th, because that one is on a much larger site and has bonus FAR from transit improvements. The size of this one based off of the awkward cantilever render is reflective of the sqft that this has atm.