How fixed launch cells and changing missiles shape Canada's River class

Is the armament of Canada's Type 26-based River-class destroyer still in flux?

Not fundamentally; the launch systems are set, while the selected missiles can change through later partnerships and integration choices.

The River-class destroyer's armament is not fundamentally in flux. Canada is already building the ships and the vertical-launch architecture provides a stable physical basis. Which missiles occupy those cells can change as partnerships and integration decisions develop. Naval programmes last for decades while individual governments last only a few years, so short-term political disagreement should not be mistaken for a complete redesign of the class.