Release 6.4.2

docs/release-notes/6.4.2/changelog.ai.txt

@@ -0,0 +1,8 @@
+AI Context: 6.4.2 Changelog (changelog.mdx)
+
+This file tracks manual edits made after the generation script ran.
+The script reads the "Skipped PRs" section to avoid re-adding removed entries.
+
+## Skipped PRs
+
+## Manual Rewrites

docs/release-notes/6.4.2/changelog.mdx

@@ -0,0 +1,22 @@
+---
+id: n2xj47qb
+title: Webiny 6.4.2 Changelog
+description: See what's new in Webiny version 6.4.2
+---
+
+import { GithubRelease } from "@/components/GithubRelease";
+import { Alert } from "@/components/Alert";
+
+<GithubRelease version={"6.4.2"} />
+
+## Headless CMS
+
+### Fixed Publishing a Previously Unpublished Revision ([#5268](https://github.com/webiny/webiny-js/pull/5268))
+
+When a published CMS entry revision was unpublished and then you attempted to publish it again, the operation would fail because the record was incorrectly marked as locked. This has been fixed — you can now re-publish previously unpublished revisions without issues.
+
+## Admin
+
+### Fixed Date Formatting Compatibility ([#5270](https://github.com/webiny/webiny-js/pull/5270))
+
+Relative date formatting (e.g., "2 hours ago") in the Admin UI was using the Temporal API, which isn't fully supported across all browsers. This has been replaced with a more compatible implementation to ensure consistent behavior.

docs/release-notes/6.4.2/upgrade-guide.mdx

@@ -0,0 +1,61 @@
+---
+id: swate5pw
+title: Upgrade from 6.4.x to 6.4.2
+description: Learn how to upgrade Webiny from 6.4.x to 6.4.2.
+---
+
+import { Alert } from "@/components/Alert";
+import { AdditionalNotes } from "@/components/upgrade/AdditionalNotes";
+
+<Alert type="success" title="What you'll learn">
+
+- how to upgrade Webiny from 6.4.x to 6.4.2
+
+</Alert>
+
+<Alert type="info">
+
+Make sure to check out the [6.4.2 changelog](./changelog) to get familiar with the changes introduced in this release.
+
+</Alert>
+
+## Step-by-Step Guide
+
+### 1. Upgrade Webiny Packages
+
+Upgrade all Webiny packages by running the following command:
+
+```bash
+yarn webiny upgrade 6.4.2 --debug
+```
+
+Note that the command above will run upgrades for all available versions of Webiny up to 6.4.2. If there are upgrades for 6.4.1, 6.4.5, they will be ran.
+
+You can omit the version to upgrade to the latest available:
+
+```bash
+yarn webiny upgrade --debug
+```
+
+Once the upgrade has finished, running the `yarn webiny --version` command in your terminal should return **6.4.2**.
+
+<Alert type="info">
+
+If the above command fails or is not available in your setup, you can run the upgrade script directly via `npx`:
+
+```bash
+npx https://github.com/webiny/webiny-upgrades-v6 6.4.2 --debug
+```
+
+</Alert>
+
+### 2. Deploy Your Project
+
+Proceed by redeploying your Webiny project:
+
+```bash
+# Execute in your project root.
+yarn webiny deploy --env {environment}
+```
+
+<AdditionalNotes />