Yes...and that will be for the Norwegians for sure.As I recall, AGM-158 could not fit in F-35 internal bay and that is one of the reason they started developing JSM from NSM . But overall AGM-158 is much more impressive weapon then NSM, so this decision seems logical .
The new JSM will fit into the internal bay...which I believe would be good for all nations. Give them some flexibility.
My point is that it would be nice to have a weapon that can fit into the bay for specific missions that might require maintaining the aircraft's stealth profile.
Call me selfish...but I would like to have both for those reasons.