Delta or bust:
Delta Said to Near Jet Order as Planemakers Scrap for Deal - Bloomberg
The way this has been shaping up, many aspects of Delta's potential deal could be ideal for CS300. This is a rare opportunity, in the sense that another deal like this from a major North American carrier might not be available again to Bombardier for years -- unlike for Boeing / Airbus / Embraer which can offer larger and smaller planes.
In a way that $1 Billion from Ottawa might really subsidize Delta instead of Bombardier. Worlds of pain if they lose this one.