In regards to the Vaughan TTC Subway Extension you can get updates here:

http://www.vivanext.com/spadina-subway-extension/

Currently they show as 50% Completed with the tunneling now almost totally completed:

http://www.yorkregion.com/news-story/4071663-tunnel-construction-for-toronto-york-spadina-subway-extension-nearing-completion/

“In terms of the whole project, we’re past the 50 per cent mark,”