The news that the three Spider-Men will be in the same frame in the new version of "Spider-Man 3" has been spread for a long time, and it has also been rumored that there are noses and eyes.
However, former spoiler master Tom Holland recently said in an interview with Esquire that Toby Maguire and Andrew Garfield certainly won't appear in Spider-Man 3.

"No, no. They won't be in this movie. Unless they're hiding a lot of information from me, but I think the secret is too big for them to hide from me. ”
"So far, though, not yet. It's just a continuation of the Spider-Man series of movies we're making. ”
This answer doesn't look like a denial, it's more like a smoke bomb!
The translation is: from the information I know so far, they did not join, but it is also possible that other staff members hid this from me, so I don't know whether they have joined or not.
Worthy of you, Marvel's new generation of anti-spoiler little aces.
As for whether Maguire and Garfield have joined? The answer is unknown.
So we can call it Schrödinger's joining for the time being, that is, before the official announcement, they may or may not join, and only the official announcement will know the result.
Spider-Man 3 is scheduled to be released in North America on December 17.