If they can get Ottawa's station downtown I will name my firstborn Cadence

Also interesting to me is confirmation of express services- "To make the service attractive there will be express trains between the largest cities". And specifically that the alignment will be finalized this year; we can spend the next 8 years of construction arguing about it.

Has the feasibility of replacing the Spirit's with more standard metro rolling stock once their lifespan ends been discussed here? I imagine the loading gauge of the tunnel is the main constraint.

With total control over the design of (most of) the trackage I think it's reasonable to expect some third passing tracks especially near Peterborough and Trois-Rivieres stations.