I finally gave in and upgraded from El Cap to High Sierra a couple of months ago to get ready for Mojave. Now I find that my computer (2011 iMac) is too old and decrepit (according to Apple) to run Mojave, and I’m now effectively stranded on High Sierra unless I buy new hardware. I would be OK with this (well, less not OK) if I felt HS will get all necessary future upgrades and patches to keep the core OS current, particularly the APFS part. Are there discussions about High Sierra’s future anywhere that might address this? If HS is going to stall out I’m probably going to fall back to El Capitan to get rid of a number of annoying little problems that came with the upgrade.