Untitled King Arthur: Legend of the Sword sequels

Untitled King Arthur: Legend of the Sword sequels that were meant to be part of a six-film franchise.

Plot
Unknown

Why It Was Cancelled

 * 1) King Arthur: Legend of the Sword (2017) underperformed at the box office.

Results

 * The films were permanently cancelled.
 * King Arthur: Legend of the Sword (2017) is a stand-alone film.