The article on the front page mentions that it should have been released in 2019Where does it say that? In what paragraph of the article?
Where does it say that you need to be an MMA member to get access to that tool?The section you are quoting from is headed with "1.8 Why Join the MMA (MIDI Manufacturers Association)" and goes on to describe the advantages of joining, including getting access to the tool you mention.
And if you need to be a paying MMA member, then why announce it publicly?How would anybody know that there was something to join if it wasn't publicly announced? I'm not sure what you're asking here.
The article on the front pageWhen you posted that, I went to the front page and clicked on the "Learn More" button which got me to the article which has section 1.8 that I was referencing.