Better Auth 1.4 introduces a range of features aimed at enhancing performance, security, and usability for developers. A standout addition is the stateless session management, which allows users to operate without a database by simply adjusting their configuration settings. This release also expands support for SCIM provisioning, making identity management more straightforward across multiple domains. Improvements to the database joins feature promise to enhance endpoint performance, reportedly speeding up over 50 endpoints by 2 to 3 times. Other key updates include secondary storage support for API keys, which speeds up key lookups, and a revamped error page that offers more clarity and customization options. The CLI now provides database indexing support, improving application performance significantly. JWT key rotation is another critical update, allowing developers to change keys without causing downtime. The article mentions breaking changes, particularly in existing auth flows like the change-email and forgot password processes. Updates on plugin options ensure a smoother developer experience, with a shift from using 'request' to 'ctx' in various callback functions. Security features have also been bolstered with an improved email change flow that requires confirmation from the current email before sending a verification to a new address. Cookie-based account storage is now available, useful for stateless applications. The article notes over 250 bug fixes, particularly in areas like session management and OAuth, addressing various issues that could impact reliability and performance. This release is a significant upgrade, focusing on providing a more efficient, customizable, and secure environment for developers using Better Auth.