diff --git a/CHANGELOG.md b/CHANGELOG.md
index f5bd9ea3..b266e54d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,9 +2,51 @@
 
 ## Table of Contents
 
+- [v0.3.0](#v030)
 - [v0.2.0](#v020)
 - [v0.1.0 - Initial version](#v010---initial-version)
 
+# v0.3.0
+
+**This version introduces API Testing Guidelines and initial linting ruleset  and other changes to documents and artifacts approved since v0.2.0.**
+
+## Please note:
+The content of the release includes:
+* Commonalities approved deliverables in **[documentation](https://github.com/camaraproject/Commonalities/tree/release-0.3.0/documentation)** folder
+  - **New:**
+    - [API Testing Guidelines](https://github.com/camaraproject/Commonalities/blob/release-0.3.0/documentation/API-Testing-Guidelines.md)
+    - [API Linting Rules](https://github.com/camaraproject/Commonalities/blob/release-0.3.0/documentation/Linting-rules.md)
+    - [OpenAPI Linting Rules Implementaion Guideline](https://github.com/camaraproject/Commonalities/blob/release-0.3.0/documentation/API-linting-Implementation-Guideline.md)
+* Commonalities approved artifacts in **[artifacts](https://github.com/camaraproject/Commonalities/tree/release-0.3.0/artifacts)** folder
+  - **New:**
+    -  [CAMARA_common.yaml](https://github.com/camaraproject/Commonalities/blob/release-0.3.0/artifacts/CAMARA_common.yaml)
+    -  [Linting rules implementation files](https://github.com/camaraproject/Commonalities/tree/release-0.3.0/artifacts/linting_rules)
+
+### Added
+* API Testing Guidelines created by @shilpa-padgaonkar in https://github.com/camaraproject/Commonalities/pull/117
+* API Design Guidelines updated with scopes naming guidelines by @jlurien in https://github.com/camaraproject/Commonalities/pull/57
+* API Linting Rules - initial linting ruleset description by @rartych in https://github.com/camaraproject/Commonalities/pull/74
+* API linting implementation and guidelines by @ravindrapalaskar17 in https://github.com/camaraproject/Commonalities/pull/110
+  
+### Changed
+* CAMARA_common.yaml includes the following changes:
+  - CAMARA_common.json was changed to CAMARA_common.yaml to be consistent with all CAMARA API specs
+  - Includes guidance for info object
+  - Adds the aligned device schema updated by @shilpa-padgaonkar in https://github.com/camaraproject/Commonalities/pull/107
+
+* X-Correlator header as required in OAS definition, X-Version removed from API Design Guidelines by @jlurien in https://github.com/camaraproject/Commonalities/pull/115
+* Filtering criteria in API Design Guidelines changed by @RubenBG7 in https://github.com/camaraproject/Commonalities/pull/132
+
+### Fixed
+* CAMARA_common.yaml - error response codes updated by @RubenBG7 in https://github.com/camaraproject/Commonalities/pull/124
+* API Design Guidelines updated on response filtering by @rartych in https://github.com/camaraproject/Commonalities/pull/123
+
+### Removed
+* API-exposure-reference-solution.docx removed from documentation/SupportingDocuments by @jordonezlucena in https://github.com/camaraproject/Commonalities/pull/104
+
+**Full Changelog**: https://github.com/camaraproject/Commonalities/compare/v0.2.0...v0.3.0
+
+
 # v0.2.0
 
 **This version introduces CloudEvents format to CAMARA Events and other changes to documents and artifacts approved since v0.1.0.**
diff --git a/README.md b/README.md
index 68c7211a..43a40615 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,10 @@ Repository to describe and document common guidelines and assets for CAMARA APIs
 
 The documents that are relevant for CAMARA API Sub Projects are found in the `documentation` directory (at the top-level). The rest of the sub-directories are primarily for internal working of the Commonalities Working Group.
 
-The `artifacts` directory contains templates for creating Github issues and Common data and error formats for CAMARA APIs.
+The `artifacts` directory contains:
+* templates for creating Github issues
+* common data and error formats for CAMARA APIs in [CAMARA_common.yaml](artifacts/CAMARA_common.yaml)
+* OAS definition of CAMARA Event using CloudEvents: [notification-as-cloud-event.yaml](artifacts/notification-as-cloud-event.yaml)
 
 ### Frequently-accessed output documents
 
@@ -32,11 +35,13 @@ A list of some of the frequently accessed documents that are an output of the wo
 | [API-Readiness-Checklist.md](documentation/API-Readiness-Checklist.md)           | A checklist that describes the minimum criteria for considering an API Ready                                                                                       |
 | [Camara_Versioning_Guidelines.md](documentation/Camara_Versioning_Guidelines.md) | Guidelines for API Subprojects on making releases                                                                                                                  |
 | [Glossary.md](documentation/Glossary.md)                                         | A glossary of the common terms and their API parameter/field names for use in the APIs                                                                             |
-
+| [API-Testing-Guidelines.md](documentation/API-Testing-Guidelines.md)             | Guidelines for the API testing in CAMARA project
+                                                                                                   |
 
 
 
 ## Status and released versions
+* Release 0.3.0 of guidelines and assets for CAMARA APIs is available within the [release-0.3.0 branch](https://github.com/camaraproject/Commonalities/tree/release-0.3.0):
 * Release 0.2.0 of guidelines and assets for CAMARA APIs is available within the [release-0.2.0 branch](https://github.com/camaraproject/Commonalities/tree/release-0.2.0):
 * Release 0.1.0 of guidelines and assets for CAMARA APIs is available within the [release-0.1.0 branch](https://github.com/camaraproject/Commonalities/tree/release-0.1.0):