[WIP] Add CHANGELOG.md with updated model hosting details

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Create a new file named CHANGELOG.md in the root of the repository with the following content:

---

title: "Update model hosting and data commitment details"
labels: copilot
date: 2025-11-18

Update to GitHub Copilot model hosting and data commitment details

What’s changed: GitHub Copilot model hosting and data commitment information has been revised to align with the most up-to-date status of our models and hosting infrastructure.

For full details visit our documentation.

Join the discussion within GitHub Community.

This pull request was created as a result of the following prompt from Copilot chat.

Create a new file named CHANGELOG.md in the root of the repository with the following content:

---

title: "Update model hosting and data commitment details"
labels: copilot
date: 2025-11-18

Update to GitHub Copilot model hosting and data commitment details

What’s changed: GitHub Copilot model hosting and data commitment information has been revised to align with the most up-to-date status of our models and hosting infrastructure.

For full details visit our documentation.

Join the discussion within GitHub Community.

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