Solid v1.3, released by the SolidJS team, introduces significant updates aimed at enhancing server-side rendering and the overall developer and user experience. Key features include HTML streaming for improved application load times, enhanced error boundaries for better error handling during synchronous rendering, and the createReaction reactive primitive for separating tracking from re-execution. The release also supports external sources, allowing the integration of third-party reactive libraries such as MobX. Improvements to existing features include better TypeScript support and more effective source maps, contributing to a smoother developer experience. Additionally, several bugs have been addressed, such as browser extension conflicts and hydration issues. The growing community around Solid suggests potential for increased adoption, despite its smaller size compared to other frameworks.