Feature Request: Add `/whats-new` slash command

Summary

Add a /whats-new or maybe /changelog slash command that provides users with the latest updates, features, and announcements for Claude Code.

Problem

Currently, users have no easy way to discover what's new in Claude Code directly from the CLI. Users need to manually check documentation, GitHub releases, or other sources to stay updated on new features and improvements.

Proposed Solution

Implement a /whats-new or /changelog slash command that:

• Shows recent version updates and release notes
• Highlights new features and capabilities
• Displays important announcements or changes
• Provides links to detailed documentation for new features
• Could optionally show updates from the last N versions or last N days

Example Usage

claude
> /whats-new

Expected output might include:

🆕 What's New in Claude Code

📦 Version 1.2.0 (Released 3 days ago)
  • Added MCP server integration support
  • Improved error handling for git operations
  • New keyboard shortcuts in interactive mode

🔧 Recent Improvements
  • Enhanced file search performance
  • Better support for monorepos
  • Updated AI model capabilities

📖 Learn more: https://docs.anthropic.com/en/docs/claude-code/changelog