I think (read: hope) the timeline all but confirms that Christopher Nolan will be directing. It's all but impossible to make a Nov 2018 start date the way he likes to prep and shoot (no second unit). He'll probably take a few months off after Dunkirk, then take over writing duties from Purvis and Wade. The script will be ready by the end of spring for a summer/early fall start date, which will give them the majority of 2019 for post.
All speculation, but I think it's a sound theory based on Nolan's timeline and known interest. Involving Lee Smith and Hoyte Van Hoytema in Spectre (replacing two already world-class crew members) seemed to me like an obvious setup by the producers to get Nolan on board for the next one.
The biggest question mark is whether they'll also take this time to recast the role.
Edited by han4bond, 26 July 2017 - 08:56 PM.