diff --git a/sdk/iothub/azure-mgmt-iotcentral/CHANGELOG.md b/sdk/iothub/azure-mgmt-iotcentral/CHANGELOG.md
index f72c5ad3838a..cfd49565e232 100644
--- a/sdk/iothub/azure-mgmt-iotcentral/CHANGELOG.md
+++ b/sdk/iothub/azure-mgmt-iotcentral/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Release History
 
+## 4.0.0 (2021-01-05)
+
+**Features**
+
+  - Model AppTemplate has a new parameter name
+
+**Breaking changes**
+
+  - Model AppTemplate no longer has parameter app_template_name
+
 ## 3.1.0 (2020-06-30)
 
 **Features**
diff --git a/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/models/_models.py b/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/models/_models.py
index a7a8b7b045bb..dffdc954039d 100644
--- a/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/models/_models.py
+++ b/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/models/_models.py
@@ -235,8 +235,8 @@ class AppTemplate(Model):
     :vartype manifest_id: str
     :ivar manifest_version: The version of the template.
     :vartype manifest_version: str
-    :ivar app_template_name: The name of the template.
-    :vartype app_template_name: str
+    :ivar name: The name of the template.
+    :vartype name: str
     :ivar title: The title of the template.
     :vartype title: str
     :ivar order: The order of the template in the templates list.
@@ -248,7 +248,7 @@ class AppTemplate(Model):
     _validation = {
         'manifest_id': {'readonly': True},
         'manifest_version': {'readonly': True},
-        'app_template_name': {'readonly': True},
+        'name': {'readonly': True},
         'title': {'readonly': True},
         'order': {'readonly': True},
         'description': {'readonly': True},
@@ -257,7 +257,7 @@ class AppTemplate(Model):
     _attribute_map = {
         'manifest_id': {'key': 'manifestId', 'type': 'str'},
         'manifest_version': {'key': 'manifestVersion', 'type': 'str'},
-        'app_template_name': {'key': 'appTemplateName', 'type': 'str'},
+        'name': {'key': 'name', 'type': 'str'},
         'title': {'key': 'title', 'type': 'str'},
         'order': {'key': 'order', 'type': 'float'},
         'description': {'key': 'description', 'type': 'str'},
@@ -267,7 +267,7 @@ def __init__(self, **kwargs):
         super(AppTemplate, self).__init__(**kwargs)
         self.manifest_id = None
         self.manifest_version = None
-        self.app_template_name = None
+        self.name = None
         self.title = None
         self.order = None
         self.description = None
diff --git a/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/models/_models_py3.py b/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/models/_models_py3.py
index 4f66adae3400..c85ec34ecca1 100644
--- a/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/models/_models_py3.py
+++ b/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/models/_models_py3.py
@@ -235,8 +235,8 @@ class AppTemplate(Model):
     :vartype manifest_id: str
     :ivar manifest_version: The version of the template.
     :vartype manifest_version: str
-    :ivar app_template_name: The name of the template.
-    :vartype app_template_name: str
+    :ivar name: The name of the template.
+    :vartype name: str
     :ivar title: The title of the template.
     :vartype title: str
     :ivar order: The order of the template in the templates list.
@@ -248,7 +248,7 @@ class AppTemplate(Model):
     _validation = {
         'manifest_id': {'readonly': True},
         'manifest_version': {'readonly': True},
-        'app_template_name': {'readonly': True},
+        'name': {'readonly': True},
         'title': {'readonly': True},
         'order': {'readonly': True},
         'description': {'readonly': True},
@@ -257,7 +257,7 @@ class AppTemplate(Model):
     _attribute_map = {
         'manifest_id': {'key': 'manifestId', 'type': 'str'},
         'manifest_version': {'key': 'manifestVersion', 'type': 'str'},
-        'app_template_name': {'key': 'appTemplateName', 'type': 'str'},
+        'name': {'key': 'name', 'type': 'str'},
         'title': {'key': 'title', 'type': 'str'},
         'order': {'key': 'order', 'type': 'float'},
         'description': {'key': 'description', 'type': 'str'},
@@ -267,7 +267,7 @@ def __init__(self, **kwargs) -> None:
         super(AppTemplate, self).__init__(**kwargs)
         self.manifest_id = None
         self.manifest_version = None
-        self.app_template_name = None
+        self.name = None
         self.title = None
         self.order = None
         self.description = None
diff --git a/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/version.py b/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/version.py
index 9797f3dd0011..20cee28211d4 100644
--- a/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/version.py
+++ b/sdk/iothub/azure-mgmt-iotcentral/azure/mgmt/iotcentral/version.py
@@ -9,5 +9,5 @@
 # regenerated.
 # --------------------------------------------------------------------------
 
-VERSION = "3.1.0"
+VERSION = "4.0.0"
 
diff --git a/sdk/iothub/azure-mgmt-iotcentral/tests/recordings/test_mgmt_iotcentral.test_iotcentral.yaml b/sdk/iothub/azure-mgmt-iotcentral/tests/recordings/test_mgmt_iotcentral.test_iotcentral.yaml
index a2c0505e6e92..bc36ec238cd1 100644
--- a/sdk/iothub/azure-mgmt-iotcentral/tests/recordings/test_mgmt_iotcentral.test_iotcentral.yaml
+++ b/sdk/iothub/azure-mgmt-iotcentral/tests/recordings/test_mgmt_iotcentral.test_iotcentral.yaml
@@ -1,218 +1,404 @@
 interactions:
 - request:
-    body: !!python/unicode '{"name": "iot14f90eeb"}'
+    body: '{"name": "iot14f90eeb", "type": "IoTApps"}'
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-      Accept-Encoding: ['gzip, deflate']
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-          msrest_azure/0.4.34 azure-mgmt-iotcentral/2018-09-01 Azure-SDK-For-Python]
-      accept-language: [en-US]
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+        msrest_azure/0.6.2 azure-mgmt-iotcentral/4.0.0 Azure-SDK-For-Python
+      accept-language:
+      - en-US
     method: POST
     uri: https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.IoTCentral/checkNameAvailability?api-version=2018-09-01
   response:
-    body: {string: !!python/unicode '{"nameAvailable":true}'}
+    body:
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     headers:
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-          C: 2018-08-07T22:32:19Z']
-      x-powered-by: [Express]
-    status: {code: 200, message: OK}
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+      content-length:
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+      etag:
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+      strict-transport-security:
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+      transfer-encoding:
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+      vary:
+      - Accept-Encoding
+      x-content-type-options:
+      - nosniff
+      x-download-options:
+      - noopen
+      x-envoy-upstream-service-time:
+      - '1307'
+      x-frame-options:
+      - deny
+      x-iot-cluster:
+      - iotcprodsoutheastasia02
+      x-iot-correlation:
+      - 10faa6xb.0
+      x-iot-version:
+      - 121620.0002-master
+      x-ms-ratelimit-remaining-subscription-writes:
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+      x-msedge-ref:
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+      x-xss-protection:
+      - 1; mode=block
+    status:
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+      message: OK
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-      "displayName": "iot14f90eeb"}, "location": "westus"}'
+    body: '{"location": "westus", "properties": {"displayName": "iot14f90eeb", "subdomain":
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     headers:
-      Accept: [application/json]
-      Accept-Encoding: ['gzip, deflate']
-      Connection: [keep-alive]
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-      accept-language: [en-US]
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+      accept-language:
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     method: PUT
     uri: https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test_mgmt_iotcentral_test_iotcentral14f90eeb/providers/Microsoft.IoTCentral/IoTApps/iot14f90eeb?api-version=2018-09-01
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-      x-powered-by: [Express]
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+      content-length:
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+      content-type:
+      - application/json; charset=utf-8
+      date:
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+      etag:
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+      x-content-type-options:
+      - nosniff
+      x-download-options:
+      - noopen
+      x-envoy-upstream-service-time:
+      - '9533'
+      x-frame-options:
+      - deny
+      x-iot-cluster:
+      - iotcprodsoutheastasia02
+      x-iot-correlation:
+      - 3akaizov.0
+      x-iot-version:
+      - 121620.0002-master
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diff --git a/sdk/iothub/azure-mgmt-iotcentral/tests/test_mgmt_iotcentral.py b/sdk/iothub/azure-mgmt-iotcentral/tests/test_mgmt_iotcentral.py
index 343638cb2c55..1f55958f1716 100644
--- a/sdk/iothub/azure-mgmt-iotcentral/tests/test_mgmt_iotcentral.py
+++ b/sdk/iothub/azure-mgmt-iotcentral/tests/test_mgmt_iotcentral.py
@@ -38,7 +38,7 @@ def test_iotcentral(self, resource_group, location):
                 'subdomain': account_name,
                 'display_name': account_name,
                 'sku': {
-                  'name': 'S1'
+                  'name': 'ST1'
                 }
             }
         )