Though these Reports have been note here before, it may be helpful to repeat them
This is from the May 2017 Project Status Update (To Government Management Committee)
https://www.toronto.ca/legdocs/mmis/2017/gm/bgrd/backgroundfile-103901.pdf
Substantial Completion of Stage 2/3 currently expected in February 2018 (excluding York and Bay Street moat covers; mid 2018), which includes the restoration of the Bay Concourse, VIA Concourse, Great Hall, remaining retail areas and East Wing exterior façade. This will trigger the turnover of the Bay Concourse to Metrolinx for final fixturing. After this time, the City will have no control of the actual timing of the opening of the Bay Concourse to the public.
Then this in January 2018 to Budget Committee.
https://www.toronto.ca/legdocs/mmis/2018/bu/bgrd/backgroundfile-111661.pdf
However, the changes, resequencing and additional project requirements of Metrolinx's track level work is delaying the City's completion of its base building work on the revitalized Bay Concourse and lower level retail. This is delaying the USRP by 8 to 12 months, with a revised expected substantial completion shifting from early 2018 to the end of 2018. Both organizations are committed to working together to mitigate both schedule and budget impacts. Staff will be reviewing all changes to also assess any lost revenues or other cost impacts and will seek to make recoveries where applicable. and
Future Milestones Planned
Remainder of Stage 2/3, which includes the Bay Concourse, is currently expected to be completed by late 2018. This will trigger the turnover of the Bay Concourse to Metrolinx to facilitate the fit out and completion of the concourse for future public access. It should be noted that upon the turnover and official sale of the Bay Concourse to Metrolinx for final fit-out, Metrolinx will determine the actual opening of the Concourse.
Substantial Completion of Stage 2/3 was previously expected in February 2018 (excluding York and Bay Street moat covers), which includes the restoration of the Bay Concourse, VIA Concourse, Great Hall, remaining retail areas and East Wing exterior façade. The York and Bay moat covers were expected to be completed in mid-2018.