The latest version of GrowthBook introduces several significant updates, including ratio metrics that allow for customized metric evaluation by setting denominators, such as "Revenue per Signup." A new user interface for experiment assignment has been implemented, enabling independent control of exposure percentages from traffic splits and providing an accurate preview of the bucketing algorithm. The permission system has been revamped to integrate feature flags within roles, laying the groundwork for future enhancements like per-environment permissions. Improvements have been made to the code editor interface, incorporating syntax highlighting for SQL and Python, while new functionality allows for archiving features to retain revision history without deletion. The Ruby SDK now supports feature flags, completing updates across all SDKs to ensure cross-platform compatibility, alongside numerous other enhancements and bug fixes detailed in the release notes.