Foundation season 4: everything we know so far about the Apple TV+ show's return

- Announced in mid-September
- In development with two new showrunners
- No release date or trailer revealed yet
- Filming will begin in early 2026
- Most of its main cast expected to return
- Three actors from season 3 might not be back
- Book series namesake provides some details on its possible plot
- Unclear if it'll still run for eight seasons

Foundation season 4 is officially in development. And, with plenty more story left to cover from Isaac Asimov's 'Foundation' book series, it would be a huge shame if Apple's sci-fi epic had been canceled after three seasons.

So, what do we know about the Apple TV+ series' next outing? This guide is your one-stop shop to everything we know so far about Foundation's return. From next season's likely cast and where its plot could go, to my prediction about a plausible release date, here's the latest information ...