"The only other detail we could uncover about Threads’ integration with the fediverse is that if you choose to restrict replies on a post, it won’t be shared outside of the Threads app." -

9to5Google

Threads, Meta's Twitter clone, starts launch countdown, plus a few details on how it works

Ahead of the app’s launch later this week, Meta has launched a landing page for its Twitter competitor, “Threads,” counting...

They are not going full ActivityPub. They're leaving a foot in the door. Another reason to mistrust them. #threads #meta