[docs-freeze] docs: snapshot and changelog for v1.15.8 (#6703)

docs/edge/en/changelog.mdx

@@ -4,6 +4,29 @@ description: "Product updates, improvements, and bug fixes for CrewAI"
 icon: "clock"
 mode: "wide"
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+<Update label="Jul 28, 2026">
+  ## v1.15.8
+
+  [View release on GitHub](https://github.com/crewAIInc/crewAI/releases/tag/1.15.8)
+
+  ## What's Changed
+
+  ### Features
+  - Add WaitTool for pausing on long-running jobs.
+
+  ### Bug Fixes
+  - Fix FileWriterTool writes and address rough edges in file tool.
+  - Mark E2B_API_KEY as a required env var for E2B tools.
+
+  ### Documentation
+  - Refresh model availability guidance.
+
+  ## Contributors
+
+  @github-actions[bot], @joaomdmoura, @lucasgomide, @oalami, @thiagomoretto
+
+</Update>
+
 <Update label="Jul 26, 2026">
   ## v1.15.7