Apple TV+ September 2026 Lineup: Slow Horses Season 6, Mayday, Last Seen and Brothers

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Apple TV+ is lining up a strong September 2026, and the headline is impossible to miss: Slow Horses Season 6 is on the way. The spy drama has become one of Apple’s most reliable crowd-pleasers, mixing bruised British wit, messy intelligence work and Gary Oldman’s gloriously chaotic Jackson Lamb.

That is not the only title worth flagging. September also brings more suspense with Mayday and Last Seen, while Brothers adds a lighter, star-led comedy option to the month’s Apple TV+ watchlist.

Apple TV+ September 2026 releases: the biggest new shows and films

If you are searching for what’s new on Apple TV+ in September 2026, this month looks built around thrillers, returning favourites and one comedy with mainstream appeal. Apple’s release strategy has often favoured prestige dramas and tightly packaged limited series, and this line-up fits that identity neatly.

The main event is Slow Horses Season 6. Few modern spy shows have balanced danger and deadpan humour this well, and the return of Slough House should be a major draw for subscribers in the UK, US and supported EU countries.

Slow Horses Season 6 comes to Apple TV+ in September 2026

Slow Horses returns for its sixth season in September 2026, continuing the story of MI5’s rejected agents, political backstabbing and Jackson Lamb’s very particular management style. The series has grown into one of Apple TV+’s signature originals, helped by its sharp writing, compact seasons and terrific cast.

For anyone catching up before the new episodes arrive, previous seasons of Slow Horses are expected to remain available on Apple TV+ where the service operates, including the US, the UK and much of the EU. Regional catalogue details can vary, so it is always worth checking the Apple TV app in your country.

Mayday and Last Seen add new thriller options

Apple TV+ is also adding two suspense-driven titles in September: Mayday and Last Seen. Both sit neatly alongside Apple’s growing collection of tense dramas and high-concept thrillers, giving viewers more than one reason to keep the subscription active after Slow Horses returns.

For fans searching for new Apple TV+ thrillers in September 2026, these are the names to keep on the radar. Exact release days may vary by region or Apple’s final scheduling, but both titles are part of the September 2026 Apple TV+ slate.

Brothers brings comedy to the September Apple TV+ schedule

After all that espionage and tension, Brothers should offer a change of pace. Billed as a star-studded comedy, it adds some welcome variety to the month and gives Apple TV+ a more relaxed option for viewers who want something lighter than spies, missing-person mysteries or action thrills.

Apple TV+ has had success with carefully cast comedy projects, so Brothers could be one of September’s more accessible new arrivals for casual viewers browsing the app.

Where to watch the Apple TV+ September 2026 line-up

All the titles listed below can be watched on Apple TV+, available through the Apple TV app and supported web browsers. Apple TV+ is available in the US, UK and many EU countries, although release timing and availability can differ slightly by territory.