macOS High Sierra comes with a new file system APFS, now according to official notes APFS for now only supports modern SSDs.
My Mac runs on a traditional rotational hard drive and according to Apple macOS High Sierra 10.13.0. Apple recently released 10.13.1 and after updating to the latest version I booted into the recovery and after opening disk utility and going through the menu bar options I came across option know as convert to APFS, so my concern is that after the recent update has Apple finally included APFS support for traditional hard drives and should I convert my drive to the latest APFS filesystem