The Apollo Client 3.0 release is the culmination of 55 betas, 14 release candidates, and hundreds of resolved issues and merged pull requests over the past eleven months. This release introduces a single, consolidated `@apollo/client` package with entry points like `@apollo/client/utilities`, improved local state management, expanded and refined UI reactivity, and extensive internal refactoring. The cache-focused design philosophy behind Apollo Client informs just about everything that's included in this release, including new features such as reactive variables, field policies, pagination helpers, and more.