I tried to install the OS, assuming it's a debian-derived distro but couldn't download it yet. Checking the author's twitter, patreon, instagram says he released beta 1, and is trying to name the web browser.

What's this all about? any ideas? Finally [1]

[1] https://www.reddit.com/r/linux/comments/4onxro/extern_os_a_n...

PS: the website uses stratus wordpress theme, which, like most of the cool wp themes is inspired by the apple website.