Not sure how you concluded that. Three out of four statements suggests more than one loco with the 4th one (Sam’s) inconclusive. Also Jasper has posted here to state that there will be more than one loco, one of which will be new to the game. Conclusion there will be more than one train on the route (albeit only one new one. QED (not sure what that means but it sounds good). Logically they need to include a DMU (eg sprinter) for St Ives and a Class 43 or other loco if they are going to provide InterCity services as far as Truro. Anyway, we shall see soon enough.