Create page for DPA-covered Previews (#58100)

Author: LawDevNull

content/site-policy/github-terms/github-dpa-previews.md

@@ -0,0 +1,19 @@
+---
+title: GitHub DPA-Covered Previews
+allowTitleToDifferFromFilename: true
+versions:
+  fpt: '*'
+topics:
+  - Policy
+  - Legal
+---
+
+## GitHub DPA-Covered Previews
+
+The pre-release products and features listed below use data handling that is the same as when the software becomes generally available. Under [GitHub’s Pre-Release License Terms](https://gh.io/preview-terms), this software is governed by [the GitHub Data Protection Agreement](https://gh.io/dpa) as of the date listed, and the Customer is the Data Controller beginning on that date.
+
+| Product / Feature                                  | DPA Coverage Date   |
+|:---------------------------------------------------|:-------------------:|
+| Copilot CLI                                        | 28 October 2025     |
+| Copilot Enterprise & Users Usage Metrics Dashboard | 28 October 2025     |
+| Spark                                              | 28 October 2025     |

content/site-policy/github-terms/index.md

@@ -12,6 +12,7 @@ children:
   - /github-community-guidelines
   - /github-community-code-of-conduct
   - /github-pre-release-license-terms
+  - /github-dpa-previews
   - /github-sponsors-additional-terms
   - /github-registered-developer-agreement
   - /github-marketplace-terms-of-service