The new file system for watchOS, iOS, tvOS, and macOS is called "Apple File System."

 Apple is allegedly developing a new file system to replace the antiquated HFS+ file system that macOS now employs. During the opening keynote of WWDC, the firm was supposed to reveal a new file system as part of the macOS 10.12 release. Apple is developing a new file system called the "Apple File System," though, and it intends to use it on devices other than Macs.

The business describes AFPS as a next-generation file system that is intended for iOS, macOS, tvOS, and watchOS in its documentation. Strong encryption, file and directory cloning, snapshots, and other capabilities make the file system well suited for Flash/SSD storage.

 Apple is allegedly developing a new file system to replace the antiquated HFS+ file system that macOS now employs. During the opening keynote of WWDC, the firm was supposed to reveal a new file system as part of the macOS 10.12 release. Apple is developing a new file system called the "Apple File System," though, and it intends to use it on devices other than Macs.

With "almost all" of HFS+'s features supported, AFPS also has a number of advantages over HFS+, including 64-bit inode numbers, timestamp granularity of one nanosecond, a large block allocator, and support for sparse files.

According to Apple's documentation, AFPS will be included in macOS Sierra 10.12 and will be published as a Developer Preview in 2017.