The Acrobat JS documentation is gone

Hello,
the official Acrobat JavaScript documentation website has not been working for several weeks at:
documentation
Does anyone know what happened?
Fortunately, an offline copy of the website is available for download from GitHub at:
GitHub documentation
I am wondering whether Adobe is planning a major overhaul of the Acrobat JavaScript DOM, or perhaps planning to discontinue JavaScript support in Acrobat.
Thanks for any information.