Ready to argue? Eight confirmed ways HBO’s Harry Potter TV series diverges from the movie

So, HBO's Harry Potter remake is now just months from launching and, true to form, another trailer has dropped to stir up more debate (and maybe a bit of nostalgia-fuelled outrage) before its Christmas Day premiere. If you were hoping for a shot-for-shot rerun of the old films, you’re in for a surprise: we’re getting more lessons, more Quidditch, and a cast that’s largely abandoned any attempt at impressionist tribute acts. From the look of this second teaser, they’re using the expanded TV format to squeeze in all the bits the films couldn’t be bothered with—and they might even pull it off.

Harry Potter returns as an HBO series on 25 December 2026, promising a much deeper dive into Hogwarts life than the old films ever managed.

Big Shoes, Wild Swaps

Let’s just get this out of the way: Jon Lithgow as Dumbledore is about as subtle a shake-up as you could imagine. The films had Richard Harris doing wistful and gentle, then Michael Gambon stomping around as the world’s most alarming grandad. Lithgow’s version—at least from the soundbite glimpsed here—is not really either. He ditches Harris’s sleepy wisdom but doesn’t get quite as theatrical as Gambon. He’s a tad gruff, but there’s a glimmer of warmth underneath—different enough to make you forget you’re watching an imitation, but maybe just familiar enough not to enrage the purists. Meanwhile, Janet McTeer and Nick Frost appear more comfortable riffing on Maggie Smith and Robbie Coltrane, so expect more respectful homages from the staff room. Still: expect fans to argue about Dumbledore for months.

Things get even more interesting with Paapa Essiedu taking on Snape. It was never going to be easy stepping into Alan Rickman’s shoes—he basically became Snape for a generation—but Essiedu’s clearly chosen not to replicate that infamous drawling monotone. Case in point: his line in the trailer, aimed at Harry over Quidditch, lands with a completely different energy—not as heavy, but still layered in barely disguised contempt. Notably, Essiedu’s Snape is actually much closer to the character’s real age in the books (mid-thirties, not grumpy fifty-something), so maybe we’ll finally get a version that lines up with what Rowling wrote. It’ll take a while for the internet to adjust, though, won’t it?

Pace, POV, and Pillow Fights

The best and most obvious advantage of HBO’s adaptation? There’s finally enough runtime to put back all the day-to-day Hogwarts detail chopped out of the movies. The trailer leans into this with class scenes, actual lessons (look out for that Herbology moment), and moments like the Hogwarts Express ride that will only mean something to people who still mourn every lost page from the source material. You even get Harry and Ron involved in a bedroom pillow fight—honestly, it’s much more relatable than yet another wobbly wand duel.

The promo also hypes up Quidditch in a big way. Unlike the films, which seemed to drop the sport after a couple of entries, here it’s set to become a running plotline right from the off. There’s flying, there’s a nearly religious pre-game atmosphere, and Harry looks distinctly more pumped than nervous. In the books, Quidditch is basically half the curriculum, so the more time spent on it, the better for anyone who actually wanted some world-building outside the big-bad-resurrects-and-fights routine.

Early Weasleys & Shifting Perspectives

Here’s a curveball: the show’s first trailer features the Weasleys all gathered round a table at the Burrow. Hardcore book fans will spot that as a timeline tweak, since you don’t see the Weasleys’ home until Chamber of Secrets. It’s a clever way of giving Ron’s character some actual family context right out of the gate and, fingers crossed, means we might finally see extended arcs for Percy and Bill—instead of them being background wallpaper like in the films.

In fact, house drama is on the menu for loads of characters. Lox Pratt, the new Draco, has already told the press his version will get actual home-life scenes. And the trailer goes full ensemble: Hermione arriving solo on the train, the Weasleys opening Hogwarts letters, even a Dumbledore-McGonagall strategy chat. The upshot is that, unlike the books (which rarely leave Harry’s POV) or the films (which do so even less), HBO’s show is ready to cut away from the lead wherever it needs drama. Could backfire for the mystery, but worth it for extra depth if they don’t overplay it.

Extra Face Time and Shiny New Badges

The supporting cast, mercifully, won’t just be scenery this time. Lavender Brown already crops up far more than expected in the footage, so there’s hope for Neville and the rest of the Gryffindor mob actually feeling like they belong at the school you’re supposed to care about. Longer runtime should mean more personality—let’s see who the directors actually favour.

Last up, a nerdy but sure-fire controversy: the Hogwarts house crests have been redesigned. Each house (yes, even Slytherin) is getting new branding, which probably means someone in the HBO sales department thinks we need another launch of merchandise. Not everyone is thrilled—fans on X (formerly Twitter, obviously) have weighed in, most siding with nostalgia. The graphic designers may have their work cut out, but it’s possibly the least fraught of all the big changes.