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
Best Answer
According to official documents and several online forums it has been confirmed that Apple is converting each and every internal HDDs into APFS File System, only when you upgrade to macOS Mojave.
APFS File System doesn't seems to create much problems in old macOS Devices with an internal HDD. So you should upgrade to the latest macOS version available i.e. macOS Mojave.