Gatsby 3.0 introduces significant improvements to its core framework, enhancing the experience for developers, content editors, and site visitors. The new version offers an 80% speed improvement in local development by processing images and pages only when needed, reducing waiting times for large sites. Content editors benefit from Incremental Builds, now available in the open-source version, which updates only changed pages, drastically cutting build times. Site visitors enjoy better performance due to a revamped gatsby-plugin-image, which simplifies the API and boosts core web vitals and Lighthouse scores. Gatsby 3.0 also updates core dependencies, eliminating bugs and enabling future features, while Gatsby Hosting reduces deploy times for faster site updates. The release aims to provide a seamless upgrade experience with extensive support and documentation, culminating in the first-ever GatsbyConf and the launch of new Gatsby Cloud capabilities.