Ok, this is way over my head. Actually, it's above and beyond what I need to know or care to know. So, after admittedly just barely skimming the article to get that HFS+ is being replaced - and I only know very little about that - I have (for the moment) only one question:
Will this affect the files created in my (new) faithful AppleWorks?
I can convert to Word for Mac at any time, but I'm not eager to do so.