“Once APFS becomes available, Apple plans to make the process of switching to the new file system incredibly simple. You won’t need to back up your data and start again with a fresh OS install, thank God. Instead, there will be an option to seamlessly transition all your devices without losing any of your files.”
Apple (and those of us who rely on its products) needs a new, modern, uniform file system. No, it’s not some sexy new feature. But it is integral to the efficiency and future of the devices we use. All we can ask is that the transition is as painless as possible. So far, it looks like it will be.