Claude Code 2.0 and Sonnet 4.5

I close and re-open my session and suddenly I'm greeted with this little guy:

So here's the change log and threads update:

Looks like we've finally got native checkpointing which will be cool to see in action.

Also, surprise Sonnet 4.5 drop?? - lets ask it the important questions:

Opus Plan mode seems to be gone also? and no 4.0 access seemingly.

Will test it out and add an update below soon :)

++ Anthropic official announcement

Enabling Claude Code to work more autonomously

Introducing Claude Code upgrades: native VS Code extension, terminal UX updates, and checkpoints for autonomous development. Handle complex tasks with confidence.

Thanks!

ciao x
🍋