Spider-Man: Brand New Day — What the Cast Confirmed at the Premiere, and What Is Still a Secret

Here is the fast answer. Spider-Man: Brand New Day is the fourth solo Spider-Man film starring Tom Holland. It premiered in London on Wednesday, 29 July 2026, is out now in UK cinemas, and opens in US theatres on 31 July 2026. It is rated PG-13 and runs 145 minutes. Early reviews are mostly warm — it opened at 92% on Rotten Tomatoes — but not unanimous. And the single thing the internet most wants to know, who Sadie Sink is playing, is exactly the thing nobody involved will say. That gap between what has been shown and what has only been guessed is the whole story below.

This piece separates the two. When something was said on the record by a named person, or printed by an outlet we opened and read, it is marked confirmed. When it is theory, it is marked unconfirmed and left there. A press tour is very good at generating excitement and very bad at drawing that line for you.

The trust key

• Confirmed: stated by a named cast member, or reported by an outlet we opened.
• Reported: carried by recognised trade or news outlets, with the limits noted.
• Unconfirmed: a possibility that no official material has settled.

That key matters more than usual here, because this is a film built on secrecy. The plot itself is about erased memory, the marketing has withheld a major casting detail on purpose, and the lead actor answered the biggest question by telling people to go watch the movie. Excitement is easy to manufacture; a fact is not.

Confirmed at a glance

What the cast actually said

Confirmed. According to the BBC, Tom Holland and Zendaya walked the white carpet in Leicester Square on Wednesday evening for the London premiere. The two, who recently married and who both appear in Christopher Nolan's The Odyssey, were the main draw. Asked by BBC News for any tips on working alongside your husband, Zendaya replied: "I think when you're best friends, it's pretty easy." She had already put it more expansively to Elle magazine, as quoted by Variety: "I get to go to work every day with my best friend, the person that I love. We bring our dogs to work; it's like a family affair."

Holland, who has played the role since 2016, told the BBC that being on set was "really fun." He added: "We've played these characters for ten years, we've loved every minute of it. Any time you're playing a character and there's something new and fresh to bring to the table, it's always so welcome, and it was just like a really fun acting exercise."

That is where the confirmed detail stops and the deflection begins. Asked whether this is the end of his time as Spider-Man, Holland would not be drawn: "You're going to have to watch this movie and that might answer your question." He did say there was an "endless" list of Marvel characters he would love to work with next — a sentiment, not a plan, and not confirmation of anything about his own future in the suit.

The premise, and why the secrecy is built in

Confirmed. The film picks up from where No Way Home left Peter Parker: he had voluntarily erased himself from the memories of everyone he loves. So Brand New Day starts him from zero — his closest friends and his girlfriend no longer know who he is. That is the emotional engine the reviews keep pointing at, and it is why the marketing has been able to hold so much back without feeling evasive: a story about forgotten identity is allowed to keep secrets.

The clearest example is Sadie Sink. The Stranger Things actor has joined the franchise, the BBC confirms, in a "highly secretive, mystery role." She did not attend the London premiere, and she has given nothing away. The internet has filled that silence with theories, and it is worth being blunt about their status: unconfirmed is unconfirmed. No casting announcement, no official caption, and no cast interview we opened has named her character. Any headline that states it as fact is guessing.

Zendaya played the same game with, of all things, her dress. She wore a floor-length Tamara Ralph gown with spider-web straps — method dressing that matches the film, styled by Law Roach. Asked whether the outfit hid clues to the plot, she laughed: "I can't say that. Read into it how you will!" It is a fun tease. It is not information.

If you have followed how modern fandom now polices this kind of secrecy — the leaked set photos, the covert filming, the spoiler embargoes — you will recognise the atmosphere. We wrote about one flashpoint of it recently, when a UK comic convention banned Meta's smart glasses after guests were filmed without knowing. A film this guarded and a fandom this equipped to record everything are pulling in opposite directions, and premieres like this one are where they meet.

Who is confirmed to be in it

Confirmed. Alongside Holland and Zendaya, the BBC and Wikipedia list returning and new faces: Jacob Batalon, plus Jon Bernthal and Mark Ruffalo among the newcomers, plus Sadie Sink in her undisclosed part. The film has a new director, Destin Daniel Cretton, replacing Jon Watts, who steered the first three. Per Wikipedia's production details, it is distributed by Sony Pictures Releasing on a reported budget of around $225 million.

A cast list confirms who appears. It does not confirm how much screen time anyone gets, who survives, or which version of a character shows up — the distinctions that fan edits tend to erase. Bernthal's and Ruffalo's roles here, for instance, are established as participation, not as the plot beats that speculation has already written for them.

The reviews: warm, with dissent

Reported. The critical reaction has been mostly positive, which the numbers back up. Per GamesRadar, the film opened at 92% on Rotten Tomatoes, making it the best-reviewed Marvel Cinematic Universe release in five years; the last MCU film to clear 90% was No Way Home, which landed 93% back in 2021. A Rotten Tomatoes score is a live figure that moves as more reviews land, so treat 92% as an opening reading rather than a settled verdict — the full critics' round-up is the better guide to why.

The individual notices, as the BBC summarised them, ran warm at the top end. The Independent's Clarisse Loughrey gave it four stars and called it "the best Spider-Man movie in more than 20 years." The Telegraph's Robbie Collin also gave four stars, saying it "restores the gawkiness the franchise has been missing." Writing in The Hollywood Reporter, David Rooney credited the film for having "the good sense to stop banging on about the damn multiverse" and instead foregrounding "the humanity that has always been Spidey's greatest strength."

It was not a clean sweep. The Guardian's Peter Bradshaw landed on three stars, and Variety's review called it "a 'mature' adventure trying too hard" — a reminder that "highest-rated in five years" and "flawless" are not the same claim. If the multiverse-heavy phase of these films left you cold, the more grounded, street-level pitch is the thing to test against your own taste, not the aggregate score.

The money question, kept honest

Reported projection — not a result. Here is where the most careless numbers usually appear, so read the tense carefully. As of this writing the film has not yet opened in the United States. Any dollar figure you see for Brand New Day is a forecast. Deadline reported tracking that points to a very large global opening — in the region of $465 million worldwide, which would rank among the biggest openings Sony has ever had, with the bulk of it from overseas. That is a projection built on pre-sales and tracking models, and box-office forecasts of this size are regularly wrong in both directions. We will know the actual opening only after the weekend of 31 July.

For scale, the confirmed historical figure is the useful one: No Way Home grossed $1.9 billion worldwide in 2021, per the BBC. That is a real result. The $465m is a guess with good sourcing, and the honest label for it is "projection."

What we are not telling you, on purpose

To keep this piece clean, here is what we have deliberately left out, because no source we opened confirmed it: who Sadie Sink is playing; whether Tom Holland returns as Spider-Man after this; whether any past screen Spider-Man returns; and what the film's actual opening weekend earns. Each of those is a real question. None of them has a verified answer yet, and printing a guess as a fact is exactly the failure this desk exists to avoid.

The bottom line

Spider-Man: Brand New Day is confirmed, dated, cast, and — by early critics — mostly liked. It is out now in the UK and opens in the US on 31 July 2026, PG-13, 145 minutes, from director Destin Daniel Cretton. Holland and Zendaya are back as Peter and MJ, the premise resets Peter's world to strangers, and the reviews are strong but not spotless. Everything past that line — Sink's role, Holland's future, the real box office — is still a secret or still a projection. Enjoy the film; just keep the two piles separate.

Related coverage: A UK comic convention banned Meta's smart glasses.