https://www.neowin.net/news/tvos-11-wasnt-announced-today-but-the-developer-beta-is-available—heres-how-to-get-it
origin - http://www.pipiscrew.com/2017/06/tvos-11-wasnt-announced-today-but-the-developer-beta-is-available/ tvos-11-wasnt-announced-today-but-the-developer-beta-is-available