APFS доступен в macOS Sierra

APFS действительно новая файловая система от Apple вобравшая в себя лучшие черты ZFS.

Но в дисковой утилите вы его не найдете, только через командную строку diskutil

diskutil apfs list

WARNING: You are using a pre-release version of the Apple File System called

APFS which is meant for evaluation and development purposes only.

Files stored on APFS volumes may not be accessible in future releases

of macOS.  You should back up all of your data before using APFS and

regularly back up data while using APFS, including before upgrading

to future releases of macOS.

You can pass the «-IHaveBeenWarnedThatAPFSIsPreReleaseAndThatIMayLoseData»

option between the «APFS» verb and the APFS sub-verb to bypass this message.

Proceed? (y/N) y

No APFS Containers

Подробнее здесь.