Another set of notes have been published, by @tomcoates on the same Meta/Threads meeting in December that I also went to:
http://plasticbag.org/archives/2024/01/how-threads-will-integrate-with-the-fediverse/
I think it's consistent with what I wrote: https://reb00ted.org/tech/20231208-meta-threads-data-dialogue/
@J12t @tomcoates HTTPS version of the website via the @internetarchive :)