+* Release Date: June 28th, 2019
+
+The Dublin 4.0.0 is the fourth major ONAP release.
+
+
+Dublin features
+===============
+Dublin release introduces the following new features:
+
+Interfaces
+----------
+- Locale/Internationalization language support for Portal and UseCase UI
+- A&AI UI integration in Portal
+- Management GUI for Customer and Service Type in UseCase UI
+- VID: Centralized Representation and Consistent ID of Cloud Regions
+- VID: Change Management - Flexible Designer & Orchestrator
+- CLI commands for end-to-end service creation
+
+VNF Validation
+--------------
+- Extended PNF requirements
+- VTP (VNF Test Platform) is enabled with scenario and test case execution
+ management
+- CSAR validation is enabled with PNF and VNF compliance check for SOL004,
+ SOL001
+- UI is available to execute VVP scripts.
+- VVP is packaged as a Docker container including scripts covering all
+ mandatory, testable HOT requirements from VNFRQTS
+- VNF SDK and VVP used for `OPNFV Verification Program (OVP) <https://vnf-verified.lfnetworking.org/#/>`_.
+
+Design-Time
+-----------
+- PNF package onboarding aligned with ETSI SOL001
+- Updating the VNFD type based on SOL001 v2.5.1
+- Controller Design Studio integration
+- VSP compliance check feature (SDC)
+- K8S based Cloud Region Support (vFW, EdgeXFoundry)
+- Model Driven Control Loop Design based on TOSCA
+- New A&AI data types and schema service
+
+Run-Time
+--------
+- Hardening of HPA in SO and extension of HPA capabilities to existing
+ use-cases
+- Extended and enhance the SO generic building block to support pre and post
+ instantiation.
+- SO to be made independent of Cloud technologies
+- PNF Plug an play updates & improvements
+- PNF support in VFC
+- MultiCloud plugin for Kubernetes based cloud regions which supports
+ deployment via Helm Charts
+- MultiCloud plugin for StarlingX
+- MultiCloud plugin for ThinkCloud
+- Additional LCM action for APPC : DistributeTrafficCheck
+- Multiple standalone ansible servers support for APPC
+- SDNC support for the PNF Use Case Network Assign for Plug and Play
+ feature
+- DCAE Collector : RESTConf collector
+- DCAE Event Processors : VES Mapper, 3gpp PM-Mapper, BBS Event
+ processor
+- Analytics/RCA : SON-Handler, Heartbeat Micro Service
+- Blueprint generator tool to simplify DCAE deployment artifact creation
+- UI interface to manage Holmes rule management.
+- Supports of Policy-model based Configuration Policy in CLAMP
+- CLAMP supports new Policy Engine direct Rest API
+- Support for Authenticated topics, Scaling support and multi-site
+ applications for DMAAP Message-Router
+- Publication history for DMAAP Data-Router
+- A new TOSCA parser common library
+
+SDO alignment
+-------------
+- ETSI: SO plugin to support SOL003 to connect to an external VNFM
+- ETSI: SOL003 Alignment for GVNFM and Catalog in VFC
+- TMF extension in External API with Service inventory notification and new
+ service specificationInputSchemas operation
+
+Operations
+----------
+- Default Storage Class Provisioner for improved Persistent Storage resiliency
+- CNI reference integration for Multi-site support
+- Platform Upgradability: Introduction of an Upgrade Framework supporting
+ automated rolling upgrades for applications and Release-to-release upgrade
+ for the following projects (A&AI, SDNC, SO)
+
+Security
+--------
+- oParent Integration to fix vulnerabilities
+- xNF communication security enhancements.
+- Containers run as non-root
+- More components integrated with AAF
+- Some AAI services can be configured to leverage the ONAP Pluggable Security
+ Sidecar proof of concept
+
+Footprint Optimization
+----------------------
+- Optimized Docker images mainly using Alpine
+- Shared MariaDB-Galera Cluster – used by : SO & SDNC
+- Shared Cassandra Cluster – used by A&AI & SDC
+- Optional deployment of independent clusters
+
+Verified use cases
+------------------
+Verified use cases are described in :ref:`verified Use Case <docs_usecases>`
+
+- :ref:`vFirewall Use Case <docs_vfw>`
+- :ref:`VF Module Scale Out Use Case (vLoadBalancer/vDNS) <docs_scaleout>`
+- :ref:`vCPE Use Case <docs_vcpe>`
+- :ref:`CCVPN (Cross Domain and Cross Layer VPN) Use Case <docs_ccvpn>`
+- :ref:`vFirewall/vDNS with HPA Use Case <docs_vfw_hpa>`
+- :ref:`vFirewall Traffic Distribution Use Case <docs_vfw_traffic>`
+- :ref:`BBS (Broadband Service) Use Case <docs_bbs>`
+- :ref:`vIPsec with HPA Use Case <docs_vipsec_hpa>`
+- :ref:`vFirewall/edgex with K8S plugin <docs_vfw_edgex_multicloud_k8s>`