feat: Kotlin 2.2.21-RC eap release details

Author: sarahhaggarty

docs/topics/eap.md

@@ -45,24 +45,23 @@ In this channel, you can also get notifications about new EAP builds.
   using the new cool features with the community.
 
 ## Build details
-
+<!--
  _No preview versions are currently available._ 
+-->
 
-<!--
 <table>
     <tr>
         <th>Build info</th>
         <th>Build highlights</th>
     </tr>
     <tr>
-        <td><strong>2.2.20-RC2</strong>
-            <p>Released: <strong>September 1, 2025</strong></p>
-            <p><a href="https://github.com/JetBrains/kotlin/releases/tag/v2.2.20-RC2" target="_blank">Release on GitHub</a></p>
+        <td><strong>2.2.21-RC</strong>
+            <p>Released: <strong>October 7, 2025</strong></p>
+            <p><a href="https://github.com/JetBrains/kotlin/releases/tag/v2.2.21-RC" target="_blank">Release on GitHub</a></p>
         </td>
         <td>
-            <p>A tooling release containing improvements and bug fixes.</p>
-            <p>For more details, please refer to the <a href="https://github.com/JetBrains/kotlin/releases/tag/v2.2.20-RC2">changelog</a> or <a href="whatsnew-eap.md">What's new in Kotlin 2.2.20-RC2</a>.</p>
+            <p>A tooling release containing support for Xcode 26, along with other improvements and bug fixes.</p>
+            <p>For more details, please refer to the <a href="https://github.com/JetBrains/kotlin/releases/tag/v2.2.21-RC">changelog</a> or <a href="whatsnew-eap.md">What's new in Kotlin 2.2.21-RC</a>.</p>
         </td>
     </tr>
-</table>
--->
+</table>