Update website

Author: benbrandt

docs/docs.json

@@ -113,7 +113,8 @@
               "rfds/session-info-update",
               "rfds/agent-telemetry-export",
               "rfds/proxy-chains",
-              "rfds/session-usage"
+              "rfds/session-usage",
+              "rfds/acp-agent-registry"
             ]
           },
           { "group": "Preview", "pages": [] },

docs/updates.mdx

@@ -4,6 +4,13 @@ description: Updates and announcements about the Agent Client Protocol
 rss: true
 ---
 
+<Update label="January 1, 2026" tags={["RFD"]}>
+## Agent Registry RFD moves to Draft stage
+
+The RFD for creating an Agent Registry has been moved to Draft stage. Please review the [RFD](./rfds/acp-agent-registry) for more information on the current proposal and provide feedback as work on the implementation begins.
+
+</Update>
+
 <Update label="January 1, 2026" tags={["RFD"]}>
 ## Session Usage RFD moves to Draft stage