Filming's about to start, some set and wardrobe pics have leaked.
No signs of Ford in the costume yet, there's a pic of him in a bar in England though.
Some of the set/wardbrobe pics seem to suggest a partial World War II setting, strangely, despite Harrison Ford's age probably meaning this would be more likely set in the 60s/70s.
Could there perhaps be a flashback with Disney/Lucasfilm using some of the de-aging CG technology we've seen in various Marvel films and Rise of Skywalker/Mandalorian being used briefly for Indy? It's still a bit hit or miss although it's gotten better since the old X-men Last stand days.....