The Rise and Fall of the Trigan Empire limited hardcover announced

[alphadogau]

From the Treasury of British Comics newsletter (Nov 2023), after book five was published:

"However, this isn't the end for the Trigan Empire – we are very pleased to exclusively announce to our newsletter readers that our series of collections will continue and collect the stories by artists who followed Lawrence, with a sixth volume scheduled for release in 2025."

[IndigoPrime]

Does anyone know how many volumes would be required for a complete run? Or alternatively to a satisfying end point?