diff --git a/experimenter/experimenter/features/manifests/fenix/.ref-cache.yaml b/experimenter/experimenter/features/manifests/fenix/.ref-cache.yaml
index 9bfa67e0991..61792a2ec00 100644
--- a/experimenter/experimenter/features/manifests/fenix/.ref-cache.yaml
+++ b/experimenter/experimenter/features/manifests/fenix/.ref-cache.yaml
@@ -1,3 +1,3 @@
-beta: eb16ff2cc6efb3ea8075a818701ee544482ddb4f
-master: e6733c6143dc6a1bd32c9c65d685528deb1ba895
-release: 6d683cdb3b3fe83ec32e3de6f9ff14b6b3fc8635
+beta: 433c203dd5e913d6382515ffa483294c7f8aa8e0
+master: 9783996dbd86f999cab50ea426079a7b10f28a2f
+release: 094f386f70c202f1f00caef757391196bf9cd066
diff --git a/experimenter/experimenter/features/manifests/firefox-desktop/.ref-cache.yaml b/experimenter/experimenter/features/manifests/firefox-desktop/.ref-cache.yaml
index 2d174c733ae..4db5cd6e9b7 100644
--- a/experimenter/experimenter/features/manifests/firefox-desktop/.ref-cache.yaml
+++ b/experimenter/experimenter/features/manifests/firefox-desktop/.ref-cache.yaml
@@ -1,5 +1,5 @@
-beta: fbae93e7fc8f49e7730cb94258e11df3a32053fe
-central: a1dd09632bac76382f7edd7187e6f5ee3e12ee68
-esr115: a2b56c9b91472176fed3cd48d530b38a37eadd57
-esr128: 821efd131ba3e03a51bf499299b3e8d132f1e72a
-release: e17d067e6040ed764d4e63a2cc3cc276120c670b
+beta: b66b29cd6fafa886947435738a6473fe4ea79dd3
+central: b16c09f16ef56cd869b620180d33f40cb4d5d504
+esr115: 234e266bcfdb4f3f36884bed096921a778cefc65
+esr128: fc58fe4cf31454de6f1d5ad811d480c8a9d18d35
+release: 78554b53f15380d45e0f82e998b25c170c223729
diff --git a/experimenter/experimenter/features/manifests/firefox-desktop/experimenter.yaml b/experimenter/experimenter/features/manifests/firefox-desktop/experimenter.yaml
index 99e1207a9f8..683222143de 100644
--- a/experimenter/experimenter/features/manifests/firefox-desktop/experimenter.yaml
+++ b/experimenter/experimenter/features/manifests/firefox-desktop/experimenter.yaml
@@ -4017,13 +4017,16 @@ sidebar:
       description: Minimum Firefox version to apply prefs
     main.tools:
       type: string
-      description: sidebar.main.tools pref value to set on user branch
+      description: sidebar.main.tools pref value to set on user branch; which tools for sidebar panels show in the launcher
     revamp:
       type: boolean
-      description: sidebar.revamp pref value to set on user branch
+      description: sidebar.revamp pref value to set on user branch; true for new experience
     verticalTabs:
       type: boolean
-      description: sidebar.verticalTabs pref value to set on user branch
+      description: sidebar.verticalTabs pref value to set on user branch; true to enable vertical tabs
+    visibility:
+      type: string
+      description: sidebar.visibility pref value ("hide" or "always-show") to set on user branch
 
 fxms_bmb_button:
   description: A feature for the Firefox Messaging System Bookmarks Bar button surface
diff --git a/experimenter/experimenter/features/manifests/firefox-desktop/v135.0.0/experimenter.yaml b/experimenter/experimenter/features/manifests/firefox-desktop/v135.0.0/experimenter.yaml
index 99e1207a9f8..683222143de 100644
--- a/experimenter/experimenter/features/manifests/firefox-desktop/v135.0.0/experimenter.yaml
+++ b/experimenter/experimenter/features/manifests/firefox-desktop/v135.0.0/experimenter.yaml
@@ -4017,13 +4017,16 @@ sidebar:
       description: Minimum Firefox version to apply prefs
     main.tools:
       type: string
-      description: sidebar.main.tools pref value to set on user branch
+      description: sidebar.main.tools pref value to set on user branch; which tools for sidebar panels show in the launcher
     revamp:
       type: boolean
-      description: sidebar.revamp pref value to set on user branch
+      description: sidebar.revamp pref value to set on user branch; true for new experience
     verticalTabs:
       type: boolean
-      description: sidebar.verticalTabs pref value to set on user branch
+      description: sidebar.verticalTabs pref value to set on user branch; true to enable vertical tabs
+    visibility:
+      type: string
+      description: sidebar.visibility pref value ("hide" or "always-show") to set on user branch
 
 fxms_bmb_button:
   description: A feature for the Firefox Messaging System Bookmarks Bar button surface
diff --git a/experimenter/experimenter/features/manifests/focus-ios/.ref-cache.yaml b/experimenter/experimenter/features/manifests/focus-ios/.ref-cache.yaml
index c7e31704b43..35ea0541966 100644
--- a/experimenter/experimenter/features/manifests/focus-ios/.ref-cache.yaml
+++ b/experimenter/experimenter/features/manifests/focus-ios/.ref-cache.yaml
@@ -12,7 +12,7 @@ focus/klar-v131.0: 34d92c8df1b1522a1da88c23879b439d763ec133
 focus/klar-v131.1: b7dca2271b14988837524a30eb154d91eb5e4912
 focus/klar-v132.0: d9ed6134db59ff456d343e2bb211aefd040319ac
 focus/klar-v133.0: a3372669a06fa684d3c5945c317d6787e3125303
-main: a7f22f8e6b9763cf3bed98786799f6b27f0d4dc8
+main: 0afe5716b2c872ccafe12c4e3de0594f4484002f
 release/v124: da250bed9e19c4978d4400d6d404cb312e33636e
 release/v125: a3e1e0773a00009e08d95726fd518ab642255ccd
 release/v126: 6f305409b4af68e8404401a2caad8cb0da9a0494
@@ -23,4 +23,4 @@ release/v130: a48ec1b1f0219e1987bb38bc4f6b838f37dc6f12
 release/v131: 7444df581b62d357df12ddc3c90d821d940efbb8
 release/v132: cb318d0061ec6354167ecc1968020d5d75f1bffc
 release/v133: 097dd46f73a1eb791a31870efc2623e555529dea
-release/v134: a1b78d31529e586e5d06404e00b7c16b8bfa09f0
+release/v134: 6efbafc2a6edb355c72dae68d1d12e61839ee2df
diff --git a/experimenter/experimenter/features/manifests/ios/.ref-cache.yaml b/experimenter/experimenter/features/manifests/ios/.ref-cache.yaml
index 75546e60ea2..d1a0ab0a2d9 100644
--- a/experimenter/experimenter/features/manifests/ios/.ref-cache.yaml
+++ b/experimenter/experimenter/features/manifests/ios/.ref-cache.yaml
@@ -1,4 +1,4 @@
-main: a7f22f8e6b9763cf3bed98786799f6b27f0d4dc8
+main: 0afe5716b2c872ccafe12c4e3de0594f4484002f
 release/v117: 43b690c450066d4dde1b2ccb93ed3714d244d502
 release/v118: 89a7ea3c3372e5a4ef5b3c5b85499d26198d0524
 release/v119: 7dc381f991c6d2a983c3ba7f0cffd880e8c29e7b
@@ -16,7 +16,7 @@ release/v130: a48ec1b1f0219e1987bb38bc4f6b838f37dc6f12
 release/v131: 7444df581b62d357df12ddc3c90d821d940efbb8
 release/v132: cb318d0061ec6354167ecc1968020d5d75f1bffc
 release/v133: 097dd46f73a1eb791a31870efc2623e555529dea
-release/v134: a1b78d31529e586e5d06404e00b7c16b8bfa09f0
+release/v134: 6efbafc2a6edb355c72dae68d1d12e61839ee2df
 v117.0: 3b275ab1e4ccef769d84437033c0c68acfd2df8a
 v117.1: 55ddcf473a65d106d43f6d2ae5af4076d6d03688
 v117.2: 5cc367aa8857199cd8a54d53e8faf6696c5614c3
diff --git a/experimenter/experimenter/features/manifests/ios/beta.fml.yaml b/experimenter/experimenter/features/manifests/ios/beta.fml.yaml
index fa148ce2cce..75156a3cbae 100644
--- a/experimenter/experimenter/features/manifests/ios/beta.fml.yaml
+++ b/experimenter/experimenter/features/manifests/ios/beta.fml.yaml
@@ -609,7 +609,7 @@ features:
       enabled:
         description: "If true, we will enable user to use the unified ads API\n"
         type: Boolean
-        default: false
+        default: true
   zoom-feature:
     description: "The configuration for the status of the zoom feature\n"
     variables:
diff --git a/experimenter/experimenter/features/manifests/ios/developer.fml.yaml b/experimenter/experimenter/features/manifests/ios/developer.fml.yaml
index 0c98970bb9e..659eea6dc4c 100644
--- a/experimenter/experimenter/features/manifests/ios/developer.fml.yaml
+++ b/experimenter/experimenter/features/manifests/ios/developer.fml.yaml
@@ -619,7 +619,7 @@ features:
       enabled:
         description: "If true, we will enable user to use the unified ads API\n"
         type: Boolean
-        default: false
+        default: true
   zoom-feature:
     description: "The configuration for the status of the zoom feature\n"
     variables:
diff --git a/experimenter/experimenter/features/manifests/ios/v135.0.0/beta.fml.yaml b/experimenter/experimenter/features/manifests/ios/v135.0.0/beta.fml.yaml
index fa148ce2cce..75156a3cbae 100644
--- a/experimenter/experimenter/features/manifests/ios/v135.0.0/beta.fml.yaml
+++ b/experimenter/experimenter/features/manifests/ios/v135.0.0/beta.fml.yaml
@@ -609,7 +609,7 @@ features:
       enabled:
         description: "If true, we will enable user to use the unified ads API\n"
         type: Boolean
-        default: false
+        default: true
   zoom-feature:
     description: "The configuration for the status of the zoom feature\n"
     variables:
diff --git a/experimenter/experimenter/features/manifests/ios/v135.0.0/developer.fml.yaml b/experimenter/experimenter/features/manifests/ios/v135.0.0/developer.fml.yaml
index 0c98970bb9e..659eea6dc4c 100644
--- a/experimenter/experimenter/features/manifests/ios/v135.0.0/developer.fml.yaml
+++ b/experimenter/experimenter/features/manifests/ios/v135.0.0/developer.fml.yaml
@@ -619,7 +619,7 @@ features:
       enabled:
         description: "If true, we will enable user to use the unified ads API\n"
         type: Boolean
-        default: false
+        default: true
   zoom-feature:
     description: "The configuration for the status of the zoom feature\n"
     variables: