So apparently Across the Spider-Verse has MULTIPLE different versions of the movie out in theaters right now???
This reddit thread by Hohoho-you goes into the details but so far all the differences between the versions include
During the opening of the film one version has a "cough" text before the Sony logo appears and added comic frames during Gwen's monologue
Lyla either takes a bunny selfie of Miguel or offers a fist bump after he calls for backup
When Gwen asks who Miguel is he either says "that’s classified” or “isn’t it obvious”
Miguel either says "that's funny" or "No" when Gwen calls him the blue panther
The build up from when Miguel was going to bite the Vulture is cut
When Jefferson fell through one of Spot's spots he either groans and looks around, or has a quick frame reaction of his face
When the Spot is going to put his finger in the mini collider he either says "-which would... not be good" or "oh what the heck."
In the chai tea scene Miles either says "no! no." Or "sorry! im sorry" after getting called out by Pavitr
When Hobie first comes on screen and Miles says "Hobie" a little text saying "Hobie" popping up above Miles’ head may or may not appear
One version has Gwen's lines when she's looking for Miles in the rubble removed
At the spider society, when Jessica asks if "anybody else got jokes" the text boxes that show up can either be yellow or blue in color
During the canon event scene Hobie has different coloring and lighting depending on the version
When Ben Reilly grabs Miles during the chase scene he either says “I’ve got you trapped in my well defined musculature so don't even-“ or “This one’s called the sleeper hold, I’m using my bicep to constrict your-"
During the chase scene Miles rides Web-Slingers horse through the villain prison and receives cheers from said villains all while the other spiders get boo’d. This scene is cut in an alternate version
In the same chase scene when the spiders cross the tightrope they either fall or get launched in the air, with the falling scene being a slightly extended version
When Miles venom strikes Miguel the line where he says "sorry man I'm goin' home" is cut
When Peter B. Parker returns home MJ either says "Hi" or "How was work" upon his return
during the Prowler!Miles reveal one version has him with more lines and details on his face (thank you @cannibalgal for pointing this one out to me)
I've only seen the film once so far but based on other people's comments online the changes seem to be mixed and matched depending on when and where you go to see the movie
(edit: added more changes)