This question already has an answer here:
It's widely known that regular Ubuntu LTS releases receive 5+ years of support while Flavors have a shorter, 3 year, support period.
However, I have now read that while the Flavor-specific programs only receive 3 years of support, the core software shared with the regular Ubuntu release will still receive support as long as the vanilla release does (5 years). Is this true?
Would it be safe to use, for example, a Kubuntu 18.04 system until 2023?
What happens if I install a minimal system from the official 18.04 Mini-ISO and just select KDE Plasma as the DE, will that still receive 5 years of updates?
Overall, I'm very confused about these proclaimed update periods.