diff --git a/experimenter/experimenter/features/manifests/fenix/.ref-cache.yaml b/experimenter/experimenter/features/manifests/fenix/.ref-cache.yaml
index 0ba69abc4e..4a6b857b0a 100644
--- a/experimenter/experimenter/features/manifests/fenix/.ref-cache.yaml
+++ b/experimenter/experimenter/features/manifests/fenix/.ref-cache.yaml
@@ -1,3 +1,3 @@
-beta: 1d2c49699acaffa690961417d5ddb7f332264db5
-master: 66aaf96f955d9bdc4bdb087a5075d5fbff2b9c8d
-release: c204af1d49b724b88bc289ea38c4d50a78d133ef
+beta: 55133241ef7a7ba6cf5b98af4ca9b8d74e06396e
+master: 70fb2d2a702db4cb455d282be77ecfe9bdcea589
+release: af473f7473be7a851b294b3bb9edd7ca8968895e
diff --git a/experimenter/experimenter/features/manifests/firefox-desktop/.ref-cache.yaml b/experimenter/experimenter/features/manifests/firefox-desktop/.ref-cache.yaml
index f2eaa6d7d7..0ccdd83987 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: 87c5950960511db3f64a06208ea24bf212638a23
-central: f4d133d6555bf90b949f8d138bb32c88a55c1ceb
-esr115: 7b461b7d80acc34e0193fa0fbed98f71242b388a
-esr128: 38b1579734e224bc72cddd532877d3b864d7d910
-release: 6ad91dc44daed9cacf53946523ebf99649f04ef5
+beta: 8d362d0dd6ca9f65ab0e73d8609c4236cbd222f4
+central: d01b815e2e1a7baed43f9b0a1e04e109109648bf
+esr115: 36fd7b6b3ddbffe940e402af3c6d1b44ce285543
+esr128: 80804a4f2b2df8460c9fca53a294ff945df9eeec
+release: 85fef6eb8f2cd56494960fee7b000e0bf9f04aaa
diff --git a/experimenter/experimenter/features/manifests/firefox-desktop/experimenter.yaml b/experimenter/experimenter/features/manifests/firefox-desktop/experimenter.yaml
index f974149a69..43452caaa8 100644
--- a/experimenter/experimenter/features/manifests/firefox-desktop/experimenter.yaml
+++ b/experimenter/experimenter/features/manifests/firefox-desktop/experimenter.yaml
@@ -2852,7 +2852,7 @@ legacyHeartbeat:
 
 queryStripping:
   description: Query parameter stripping anti-tracking feature.
-  owner: pbz@mozilla.com
+  owner: emz@mozilla.com
   hasExposure: false
   variables:
     enabledNormalBrowsing:
@@ -3504,7 +3504,7 @@ bookmarks:
 
 cookieBannerHandling:
   description: Automatically handle cookie banners on the user's behalf.
-  owner: pbz@mozilla.com
+  owner: emz@mozilla.com
   hasExposure: false
   variables:
     modeNormalBrowsing:
@@ -3723,15 +3723,30 @@ nimbusIsReady:
 
 nimbusTelemetry:
   description: A feature that enables or disables Nimbus telemetry.
-  owner: chumphreys@mozilla.com
+  owner: nimbus-team@mozilla.com
   hasExposure: false
   applications:
     - firefox-desktop
   variables:
     gleanMetricConfiguration:
-      description: A Glean metric configuration JSON blob.
+      description: >
+       A Glean metric configuration JSON blob.
+
+       This is limited to configuring the following categories:
+       - nimbus_events
+       - nimbus_targeting_context
+       - nimbus_targeting_environment
+      type: json
+
+    nimbusTargetingEnvironment:
+      description: >
+        Configuration for the nimbus_targeting_environment telemetry category.
       type: json
 
+  schema:
+    uri: resource://nimbus/schemas/NimbusTelemetryFeature.schema.json
+    path: toolkit/components/nimbus/schemas/NimbusTelemetryFeature.schema.json
+
 httpsFirst:
   description: >-
     Prefs for HTTPS-First, which upgrades all top-level page loads to HTTPS and
@@ -3931,7 +3946,7 @@ certCompression:
 
 bounceTrackingProtection:
   description: Controls the Bounce Tracking Protection feature.
-  owner: pbz@mozilla.com
+  owner: emz@mozilla.com
   hasExposure: false
   variables:
     enabled:
diff --git a/experimenter/experimenter/features/manifests/firefox-desktop/schemas/toolkit/components/nimbus/schemas/NimbusTelemetryFeature.schema.json b/experimenter/experimenter/features/manifests/firefox-desktop/schemas/toolkit/components/nimbus/schemas/NimbusTelemetryFeature.schema.json
new file mode 100644
index 0000000000..668236e81c
--- /dev/null
+++ b/experimenter/experimenter/features/manifests/firefox-desktop/schemas/toolkit/components/nimbus/schemas/NimbusTelemetryFeature.schema.json
@@ -0,0 +1,35 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "type": "object",
+  "properties": {
+    "gleanMetricConfiguration": {
+      "type": "object",
+      "properties": {
+        "metrics_enabled": {
+          "type": "object",
+          "patternProperties": {
+            "^nimbus_targeting_environment\\..*": { "type": "boolean" },
+            "^nimbus_targeting_context\\..*": { "type": "boolean" },
+            "^nimbus_events\\..*": { "type": "boolean" }
+          },
+          "additionalProperties": false
+        }
+      },
+      "additionalProperties": true
+    },
+    "nimbusTargetingEnvironment": {
+      "type": "object",
+      "properties": {
+        "recordAttrs": {
+          "description": "A list of attributes that should be recorded in the nimbus_targeting_environment.targeting_context_value metric. If not provided, it will default to all attributes.",
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      },
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true
+}
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 f974149a69..43452caaa8 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
@@ -2852,7 +2852,7 @@ legacyHeartbeat:
 
 queryStripping:
   description: Query parameter stripping anti-tracking feature.
-  owner: pbz@mozilla.com
+  owner: emz@mozilla.com
   hasExposure: false
   variables:
     enabledNormalBrowsing:
@@ -3504,7 +3504,7 @@ bookmarks:
 
 cookieBannerHandling:
   description: Automatically handle cookie banners on the user's behalf.
-  owner: pbz@mozilla.com
+  owner: emz@mozilla.com
   hasExposure: false
   variables:
     modeNormalBrowsing:
@@ -3723,15 +3723,30 @@ nimbusIsReady:
 
 nimbusTelemetry:
   description: A feature that enables or disables Nimbus telemetry.
-  owner: chumphreys@mozilla.com
+  owner: nimbus-team@mozilla.com
   hasExposure: false
   applications:
     - firefox-desktop
   variables:
     gleanMetricConfiguration:
-      description: A Glean metric configuration JSON blob.
+      description: >
+       A Glean metric configuration JSON blob.
+
+       This is limited to configuring the following categories:
+       - nimbus_events
+       - nimbus_targeting_context
+       - nimbus_targeting_environment
+      type: json
+
+    nimbusTargetingEnvironment:
+      description: >
+        Configuration for the nimbus_targeting_environment telemetry category.
       type: json
 
+  schema:
+    uri: resource://nimbus/schemas/NimbusTelemetryFeature.schema.json
+    path: toolkit/components/nimbus/schemas/NimbusTelemetryFeature.schema.json
+
 httpsFirst:
   description: >-
     Prefs for HTTPS-First, which upgrades all top-level page loads to HTTPS and
@@ -3931,7 +3946,7 @@ certCompression:
 
 bounceTrackingProtection:
   description: Controls the Bounce Tracking Protection feature.
-  owner: pbz@mozilla.com
+  owner: emz@mozilla.com
   hasExposure: false
   variables:
     enabled:
diff --git a/experimenter/experimenter/features/manifests/firefox-desktop/v135.0.0/schemas/toolkit/components/nimbus/schemas/NimbusTelemetryFeature.schema.json b/experimenter/experimenter/features/manifests/firefox-desktop/v135.0.0/schemas/toolkit/components/nimbus/schemas/NimbusTelemetryFeature.schema.json
new file mode 100644
index 0000000000..668236e81c
--- /dev/null
+++ b/experimenter/experimenter/features/manifests/firefox-desktop/v135.0.0/schemas/toolkit/components/nimbus/schemas/NimbusTelemetryFeature.schema.json
@@ -0,0 +1,35 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "type": "object",
+  "properties": {
+    "gleanMetricConfiguration": {
+      "type": "object",
+      "properties": {
+        "metrics_enabled": {
+          "type": "object",
+          "patternProperties": {
+            "^nimbus_targeting_environment\\..*": { "type": "boolean" },
+            "^nimbus_targeting_context\\..*": { "type": "boolean" },
+            "^nimbus_events\\..*": { "type": "boolean" }
+          },
+          "additionalProperties": false
+        }
+      },
+      "additionalProperties": true
+    },
+    "nimbusTargetingEnvironment": {
+      "type": "object",
+      "properties": {
+        "recordAttrs": {
+          "description": "A list of attributes that should be recorded in the nimbus_targeting_environment.targeting_context_value metric. If not provided, it will default to all attributes.",
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      },
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true
+}
diff --git a/experimenter/experimenter/features/manifests/focus-ios/.ref-cache.yaml b/experimenter/experimenter/features/manifests/focus-ios/.ref-cache.yaml
index 96fa6b6104..ee9447dc9b 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: 394d238bbc555d3e6c59f9bb672e586b4af58a2b
+main: 002ab8d61d8ad5f5349de2a90020c0ef15acd2cd
 release/v124: da250bed9e19c4978d4400d6d404cb312e33636e
 release/v125: a3e1e0773a00009e08d95726fd518ab642255ccd
 release/v126: 6f305409b4af68e8404401a2caad8cb0da9a0494
@@ -22,5 +22,5 @@ release/v129: 500c57e46f0de7c5125ba823eb4f72500934bdca
 release/v130: a48ec1b1f0219e1987bb38bc4f6b838f37dc6f12
 release/v131: 7444df581b62d357df12ddc3c90d821d940efbb8
 release/v132: cb318d0061ec6354167ecc1968020d5d75f1bffc
-release/v133: 5230c008f4c592fb4bf229f435d24dc912d96d16
-release/v134: 9c03589c19b92066405ccfa66b76686a48d49824
+release/v133: 80bf9ad762058e5dede8b222f348671f949ad855
+release/v134: be550d94c2c7bc8b8902cdf7fe542a64e73a381a
diff --git a/experimenter/experimenter/features/manifests/ios/.ref-cache.yaml b/experimenter/experimenter/features/manifests/ios/.ref-cache.yaml
index d70ef1f119..95a1a722b6 100644
--- a/experimenter/experimenter/features/manifests/ios/.ref-cache.yaml
+++ b/experimenter/experimenter/features/manifests/ios/.ref-cache.yaml
@@ -1,4 +1,4 @@
-main: 394d238bbc555d3e6c59f9bb672e586b4af58a2b
+main: 002ab8d61d8ad5f5349de2a90020c0ef15acd2cd
 release/v117: 43b690c450066d4dde1b2ccb93ed3714d244d502
 release/v118: 89a7ea3c3372e5a4ef5b3c5b85499d26198d0524
 release/v119: 7dc381f991c6d2a983c3ba7f0cffd880e8c29e7b
@@ -15,8 +15,8 @@ release/v129: 500c57e46f0de7c5125ba823eb4f72500934bdca
 release/v130: a48ec1b1f0219e1987bb38bc4f6b838f37dc6f12
 release/v131: 7444df581b62d357df12ddc3c90d821d940efbb8
 release/v132: cb318d0061ec6354167ecc1968020d5d75f1bffc
-release/v133: 5230c008f4c592fb4bf229f435d24dc912d96d16
-release/v134: 9c03589c19b92066405ccfa66b76686a48d49824
+release/v133: 80bf9ad762058e5dede8b222f348671f949ad855
+release/v134: be550d94c2c7bc8b8902cdf7fe542a64e73a381a
 v117.0: 3b275ab1e4ccef769d84437033c0c68acfd2df8a
 v117.1: 55ddcf473a65d106d43f6d2ae5af4076d6d03688
 v117.2: 5cc367aa8857199cd8a54d53e8faf6696c5614c3