Add announcement bar for 0.4 (#3717)

Author: jackgerrits

website/docusaurus.config.js

@@ -184,14 +184,14 @@ module.exports = {
       ],
       copyright: `Copyright © ${new Date().getFullYear()} AutoGen Authors |  <a target="_blank" style="color:#10adff" href="https://go.microsoft.com/fwlink/?LinkId=521839">Privacy and Cookies</a> |  <a target="_blank" style="color:#10adff" href="https://go.microsoft.com/fwlink/?linkid=2259814">Consumer Health Privacy</a>`,
     },
-    // announcementBar: {
-    //   id: "whats_new",
-    //   content:
-    //     'What\'s new in AutoGen? Read <a href="/autogen/blog/2024/03/03/AutoGen-Update">this blog</a> for an overview of updates',
-    //   backgroundColor: "#fafbfc",
-    //   textColor: "#091E42",
-    //   isCloseable: true,
-    // },
+    announcementBar: {
+      id: "newdocs",
+      content:
+        'Go <a href="/autogen/dev">here</a> to view the documentation for the work in progress version of AutoGen 0.4.',
+      backgroundColor: "#fafbfc",
+      textColor: "#091E42",
+      isCloseable: true,
+    },
     /* Clarity Config */
     clarity: {
       ID: "lnxpe6skj1", // The Tracking ID provided by Clarity