Feb 27 – Mar 06, 2026
1 new feature · 1 deprecation
We're updating Week 4 materials after Sonnet 4.5 was completely removed from Claude's web and mobile apps. This change ensures you're learning with the most current and stable AI models available.
The latest Claude Code npm package (version 2.1.70) is now available, and we're incorporating it into Week 1 to get you started with the most up-to-date tools from day one. This means you'll be working with the freshest features and improvements right out of the gate.
Before starting any new Claude Code project, run npm list to verify you're using the latest version. Staying current with package updates ensures you have access to the newest features and bug fixes.
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