Mostly "early work" such as lengthening the passenger tunnels at Exhibition, preparing for the TBM's, and clearing the area for construction material storage.Are shovels are in the ground? It looks like they knocked down a building but I've yet to see any sign they've started on actual construction.
Existing Unopened Passenger Tunnel Extension and Tunnel Entrance BuildingAn existing out of service passenger tunnel extension and station entrance will be opened. This newly opened tunnel and entrance with a walkway to Atlantic Avenue will be in service until the new north entrance is completed. The existing platform access at the bottom of Atlantic Avenue will be removed to accommodate construction of the new north GO platform and the GO Track 1 shift. Once the new north entrance is open, the Atlantic Avenue walkway will close and the tunnel extension and vertical access will continue to provide passenger access.