Then how is it "leaked"? And who was it leaked to?
Most of that reporting was based on public statements made by key politicians and negotiators. Some of it was expanded upon on background. "Leaked US trade demands" is a dishonest claim. As far as I know, there can be no list of demands because there were only verbal discussions. Those talks broke down as they were beginning to put them in writing. So this isn't a leaked list and it also isn't a list of things that were leaked. So what is it? Just a list from an unknown author, I guess.
Edit: Thanks for the link!