GrowthBook 2.0 introduces several developer-centric enhancements designed to improve the user experience, including a fully typesafe feature flag SDK for Typescript that helps catch typos and bugs during compile time through an auto-generating GrowthBook CLI. The update also brings instant feature releases to GrowthBook Cloud, enabling rapid rollout of feature changes to all users in under a second, and expands the REST API with over 20 new endpoints, allowing for functionalities such as syncing experiment results to data warehouses. Additionally, improvements have been made to the example repository and documentation, with new examples for integrating GrowthBook, enhanced GoLang documentation, and support for Experiment CRUD events in webhooks. The update is set to cater further to data scientists and analysts in upcoming announcements.