If you are using every single feature Astro has, your code somehow goes through every single branch (of every single dependency), etc then yes, but that'd be a

If you are using every single feature Astro has, your code somehow goes through every single branch (of every single dependency), etc then yes, but that'd be a pretty far-fetched scenario! In practice, our users typically comment quite positively on how little (if any) work major updates requires, and we offer pretty extensive upgrade guides, if that helps.