On 1st October 2016, we released Vue 2.0. Three years have passed since. The frontend ecosystem, especially JavaScript standards and browsers, have come far. New APIs – e.g., Proxies – are available on most browsers. This has presented us with an opportunity to address the caveats in Vue's reactivity system. We are using this opportunity to address the smaller but important issues in the ecosystem. A cherry on top, significant performance enhancements for Vue 3.