Apple File System
The spartan description of APFS certainly sounds like the (partial) feature list for ZFS--the comparisons made in the comments here are on-point. ZFS though took around 5 years to ship and, arguably, another 5-10 to get right. I say this having shipped multiple products based on ZFS, writing code in ZFS, and diagnosing production problems with it.On-disk consistency ("crash protection"), snapshots, encryption, and transactional interfaces ("atomic safe-save") will no doubt be incredibly valuable. I don't think though though that APFS will dramatically improve upon the time it took ZFS to mature from a first product to world-class storage.Some commenters have opined that (despite Apple distributing ZFS for Mac OS X at WWDC nearly a decade ago) that ZFS would never be appropriate for the desktop, phone, or watch. True ZFS was designed for servers and storage servers, but I don't think there's anything that makes it innately untenable in those environments--even its default, but not essential, use of lots of RAM.Who knows... maybe Apple have spent the decade since killing their internal ZFS port taking this new filesystem though the paces. Its level of completeness though would suggest otherwise.