The info leeking out gives hints of prep works for the main redevelopment. What are these likely to involve? Also, how much less space on the GLQ high level concourse will there be post platform lemgthaning works?
Work should be starting around July/August 2016 to coincide with the Millennium Hotel extension's closure in January 2017.
The plans that I've seen currently have the existing ticket office to be closed and a temporary replacement prepared, retail space below station manager's office to be stripped and converted to additional circulation space, some works on Dundas Street to create safe walking routes, all of which should run through to September, then more stripping out work through to January 2017 with demolition shortly thereafter.
Concourse space is changed at the same time as platform lengthening is happening, so there's not a massive difference in the platform space before or after the rebuilding works, though there will be disruption during the works themselves.
Electrification of the platforms and train shed is separate to the rebuilding as is, but installation of rigid overhead conductor is concurrent with the tunnel rebuilding this summer.
