Hang on ... what's that new structure to the left (west), on Line 2, between Pape and Chester?. At first glance, I took that to be the newish Second Exit/Entrance they'd added. But it isn't, of course - it's the wrong direction and not connected to the platform.
It looks like an emergency exit. But why would that be part of Metrolinx's plans? And why would you need one in the short distance to Chester station? And why would you need stairs on both sides of the tracks for an emergency exit?
It's too far west of the platform to be another exit from the station. (it looks to be about where the laneway is, halfway between Pape and Gough, just east of that vent at the northeast corner of that magnificent Catholic church.