Starting a test where posts from Threads accounts will be available on Mastodon and other services that use the ActivityPub protocol. Making Threads interoperable will give people more choice over how they interact and it will help content reach more people. I'm pretty optimistic about this.
I have my problems with Meta, but I’m hoping this will help Mastodon grow
This is just a guess, but I think that the likelihood of Twitter federating is almost to zero, unless forced by legislations to do so. It simply doesn’t benefit from that
That, and Musk’s ego won’t allow it.