Not just the promotional images, but also the scripts for the actors were AI generated
The AI also created a whole new character called the unnamed (Edit: unknown, not unnamed), a shadowy chocolate-maker who became evil and lives inside the walls
Edit: Also they didn’t have any chocolate and each guest only got a single jelly bean and a 6cl shot of lemonade
Genuinely, The Unnamed is still a more logical extension of the Willy Wonka lore than the actual sequel book, which involves a plot by shapeshifting aliens to take over a space hotel, Willy Wonka being declared an enemy of the state by the president of the US, and confectionery that can alter time itself.