According to a local new source, excavation work is about to begin for a new convention centre, hotel, and office complex in Halifax. The image below shows the rendering and the context for the site. It's an interesting spot just outside the old conventional "CBD" area of office towers, and is currently one of the biggest holes downtown. I think it, along with the library, will make downtown Halifax feel much bigger and tie together the old downtown and Spring Garden Road districts:

(see
http://novacentre.ca/ for original rendering)
One interesting element of the design is the canopy over Grafton Street, which is a lot like the canopy over Pike Street that was built as part of Seattle's convention centre. Hopefully the Halifax version will be more successful and will become an integrated part of the (informal) entertainment district nearby.