the last known good version of any piece of software is always numbered something like "11.1.2.2".
the sleepy release engineer doesn't know it'll come to have that status, when they send it out into the world. but that's the version that the alien archeologists will discover and unearth, etched into sheets of mica, and decipher 920,000 years from now, and marvel at the intricately absurd world we built for ourselves.