diff --git a/microsite-next/sidebars.json b/microsite-next/sidebars.json
index 67c4209976..f489771fa0 100644
--- a/microsite-next/sidebars.json
+++ b/microsite-next/sidebars.json
@@ -1,6 +1,9 @@
 {
   "releases": {
     "Release Notes": [
+      "releases/v1.11.0",
+      "releases/v1.10.0",
+      "releases/v1.9.0",
       "releases/v1.8.0",
       "releases/v1.7.0",
       "releases/v1.6.0",
@@ -85,7 +88,8 @@
           "features/kubernetes/installation",
           "features/kubernetes/configuration",
           "features/kubernetes/authentication",
-          "features/kubernetes/troubleshooting"
+          "features/kubernetes/troubleshooting",
+          "features/kubernetes/proxy"
         ]
       },
       {
@@ -101,6 +105,7 @@
           "features/software-templates/writing-custom-actions",
           "features/software-templates/writing-custom-field-extensions",
           "features/software-templates/writing-custom-step-layouts",
+          "features/software-templates/testing-scaffolder-alpha",
           "features/software-templates/migrating-from-v1beta2-to-v1beta3"
         ]
       },
@@ -199,7 +204,8 @@
         "label": "GitLab",
         "items": [
           "integrations/gitlab/locations",
-          "integrations/gitlab/discovery"
+          "integrations/gitlab/discovery",
+          "integrations/gitlab/org"
         ]
       },
       {
@@ -237,8 +243,7 @@
           "plugins/proxying",
           "plugins/backend-plugin",
           "plugins/call-existing-api",
-          "plugins/url-reader",
-          "plugins/new-backend-system"
+          "plugins/url-reader"
         ]
       },
       {
@@ -361,6 +366,43 @@
       "architecture-decisions/adrs-adr012",
       "architecture-decisions/adrs-adr013"
     ],
-    "FAQ": ["FAQ"]
+    "FAQ": ["FAQ"],
+    "Experimental Backend System": [
+      "backend-system/index",
+      {
+        "type": "category",
+        "label": "Architecture",
+        "items": [
+          "backend-system/architecture/index",
+          "backend-system/architecture/services",
+          "backend-system/architecture/plugins",
+          "backend-system/architecture/extension-points",
+          "backend-system/architecture/modules",
+          "backend-system/architecture/naming-patterns"
+        ]
+      },
+      {
+        "type": "category",
+        "label": "Building Backends",
+        "items": [
+          "backend-system/building-backends/index",
+          "backend-system/building-backends/migrating"
+        ]
+      },
+      {
+        "type": "category",
+        "label": "Building Plugins & Modules",
+        "items": [
+          "backend-system/building-plugins-and-modules/index",
+          "backend-system/building-plugins-and-modules/testing",
+          "backend-system/building-plugins-and-modules/migrating"
+        ]
+      },
+      {
+        "type": "category",
+        "label": "Core Services",
+        "items": ["backend-system/core-services/index"]
+      }
+    ]
   }
 }