What does everything think of the new APFS filesystem from Apple. The new High Sierra macOS is going to automatically convert flash disks on install to APFS from HFS+. It seems pushy to me, but Apple must have confidence if they are going to do so.

• What has changed since this write on APFS up a year ago?
• How does it compare to similar filesystems?
• Will there be FOSS drivers for Linux and other systems?
• Will APFS be a good filesystem to use for backups?