diff --git a/sdk/digitaltwins/azure-digitaltwins-core/CHANGELOG.md b/sdk/digitaltwins/azure-digitaltwins-core/CHANGELOG.md
index 3a9a5f0f7f6f8..4278e8fdf8661 100644
--- a/sdk/digitaltwins/azure-digitaltwins-core/CHANGELOG.md
+++ b/sdk/digitaltwins/azure-digitaltwins-core/CHANGELOG.md
@@ -1,16 +1,34 @@
 # Release History
 
-## 1.0.0 (Unreleased)
+## 1.0.0 (2020-10-30)
 
 ### New Features
 
-- Regenerate protocol layer from service API version 2020-10-31
-- Update service API version to use service API version 2020-10-31 by default
-- Add optional parameters for traceparent and tracestate to all service request APIs to support distributed tracing
+- Regenerated protocol layer from service API version 2020-10-31.
+- Updated service API version to use service API version 2020-10-31 by default.
 
-### Breaking Changes
+### Breaking changes
+
+Note that these breaking changes are only breaking changes from the preview version of this library.
+
+- Replaced all `Response<string>` and `Pageable<string>` APIs with `Response<T>` and `Pageable<T>` respectively.
+- Renamed `CreateDigitalTwin`, `CreateRelationship` and `CreateEventRoute` APIs to `CreateOrReplaceDigitalTwin`, `CreateOrReplaceRelationship` and `CreateOrReplaceEventRoute` respectively.
+- Renamed model type `ModelData` to `DigitalTwinsModelData` to make type less generic, and less likely to conflict with other libraries.
+- Renamed model type `EventRoute` to `DigitalTwinsEventRoute` to make type less generic, and less likely to conflict with other libraries.
+- `EventRoute` (now `DigitalTwinsEventRoute`) object ctor now requires filter.
+- Removed `UpdateOperationsUtility` and replace it with a direct dependency on [JsonPatchDocument](https://github.com/Azure/azure-sdk-for-java/blob/master/sdk/core/azure-core/src/main/java/com/azure/core/models/JsonPatchDocument.java) from azure-core.
+- Removed `WritableProperty` since service no longer returns that type.
+- Removed `MaxItemCount` parameter as an option for GetEventRoutes APIs since users are expected to provide page size in pageable type's .AsPages() method instead.
+- Renamed `DigitalTwinsModelData` field `DisplayName` to `DisplayNameLanguageMap` for clarity.
+- Renamed `DigitalTwinsModelData` field `Description` to `DescriptionLanguageMap` for clarity.
+- Renamed `DigitalTwinsModelData` field `model` to `dtdlModel`.
+- Flattened `DigitalTwinsRequestOptions` so that each API takes in ifMatch and ifNoneMatch header directly.
+- Reworked `BasicDigitalTwin` and other helper classes to better match the service definitions. This includes renaming `CustomProperties` to `Contents`.
+- Added `messageId` as mandatory parameter for telemetry APIs. Service API version 2020-10-31 requires this parameter.
+- Renamed CreateModels API parameter `models` to `dtdtlModels` for clarity.
 
-- Add messageId as mandatory parameter for telemetry APIs. Service API version 2020-10-31 requires this parameter.
+### Fixes and improvements
+- Fixed bug where `CreateDigitalTwin` and `CreateRelationship` APIs always sent ifNoneMatch header with value "*" making it impossible to replace an existing entity.
 
 ## 1.0.0-beta.3 (2020-10-01)
 
diff --git a/sdk/digitaltwins/azure-digitaltwins-core/README.md b/sdk/digitaltwins/azure-digitaltwins-core/README.md
index d2e7b3bfd2fe4..14eee73909a94 100644
--- a/sdk/digitaltwins/azure-digitaltwins-core/README.md
+++ b/sdk/digitaltwins/azure-digitaltwins-core/README.md
@@ -18,7 +18,7 @@ For the best development experience, developers should use the official Microsof
 <dependency>
   <groupId>com.azure</groupId>
   <artifactId>azure-digitaltwins-core</artifactId>
-  <version>1.0.0-beta.3</version>
+  <version>1.0.0</version>
 </dependency>
 ```