83 - 80 = 3 Therefore version 83 is 3 versions ahead of version 80. Note that "version" in this context is shorthand for "major version". It does not include m

83 - 80 = 3 Therefore version 83 is 3 versions ahead of version 80. Note that "version" in this context is shorthand for "major version". It does not include minor patches that only fix a bug or security issue. Each new major version of Firefox comes with new features and may occasionally deprecate or remove old features. They are currently released roughly every 4 weeks.