We are still on v7 FW. The arrays only have 18 more months until EOL. I see no reason to update to v8 or v9, as the new features add no value.  Its been a while since there were any v7 updates, so I wondering if that's because v7 is really stable now with no critical updates, or do I have to go to v9 for any latest fixes?

Should I have to read the v8 and v9 change logs, or can I just track v7?