What matters is when that date is set for (traditionally based on the day it goes on sale) and when the new OS comes out (7 years from now). This is also only the guaranteed support date. They can (and have) delivered updates after the guaranteed date.
None of that matters. End of support dates are published.
What matters is when that date is set for (traditionally based on the day it goes on sale) and when the new OS comes out (7 years from now). This is also only the guaranteed support date. They can (and have) delivered updates after the guaranteed date.