Claude Code receives major upgrades including a native VS Code extension with inline diffs, an enhanced terminal interface with searchable history, and a checkpoint system for safely reverting code changes. The tool now supports autonomous development through subagents for parallel workflows, hooks for automated actions, and background tasks for long-running processes. The Claude Agent SDK enables teams to build custom agentic experiences using the same core infrastructure. All features are powered by Sonnet 4.5 and available now.