The Sentry team is deprecating their legacy JavaScript SDK, raven-js, in favor of the newer @sentry/browser SDK on npm, which will be introduced in Q2 2020. The change aims to unify API surfaces and improve code maintainability through features like built-in TypeScript support, a clearer API, and easier feature development. The new SDKs also provide a more consistent experience across different programming languages and frameworks, allowing users to easily switch between them without significant changes. The Sentry team encourages feedback and welcomes users to explore the new SDKs in the Forums or on Github.