ST. LOUIS — ‘This Is Us’ fans, NBC has a special announcement for you!

In honor of the Big 3’s birthday on Aug. 31, the network released a special trailer for the upcoming season and the season 4 premiere will be an extended version.

The Big 3 - Kevin (Justin Hartley), Randall (St. Louis’ Sterling K. Brown), Kate (Chrissy Metz) were supposed to be born on Oct. 12, but they ended up being born six weeks early.

Season 4 will premiere on Sept. 24. It will begin at 8 p.m. central time and end shortly after 9 p.m.

The new season is supposed to be very ‘unexpected’ and there will be something ‘disruptive.’

‘If you think you know what’s coming next, you don’t know us.’

Click here to watch the trailer if you can’t see below

NBC also said there will be new cast members, but they haven’t said anything about their roles in the series.

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New cast members:

Asante Blackk

Marsha Stephanie Blake

Omar Epps

Bahara Golestani

Jennifer Morrison

Timothy Omundson

M. Night Shyamalan

Julian Silva

Auden Thornton

Nick Wechsler

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