diff --git a/VERSION b/VERSION
index faad078..198d0ef 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.12.4.1
+2.12.4.2-dev
diff --git a/config.mk b/config.mk
index 2add84e..1a6c595 100644
--- a/config.mk
+++ b/config.mk
@@ -38,6 +38,7 @@
 ##-----------------------------##
 ##---]  Custom exclusions  [---##
 ##-----------------------------##
+lint-doc8-excl += --ignore-path '_build'
 lint-doc8-excl += --ignore-path "vendor"
 
 config-mk-version    := 1.0
diff --git a/howto/release/checklist.rst b/howto/release/checklist.rst
index 10c22b9..66cd045 100644
--- a/howto/release/checklist.rst
+++ b/howto/release/checklist.rst
@@ -56,3 +56,60 @@
 -----------
 
 Once dependent packages are built update helm charts:  charts/index
+
+Voltha with golang source
+-------------------------
+
+Review all repositories that contain golang sources.
+Version(s) of external packages in the vendor/ directory may need to be updated.
+
+.. code-block: shell-session
+   :linenos:
+   :hilight: 2, 4
+
+   # Clone repo:voltha-go
+   git clone ssh://gerrit.opencord.org:29418/voltha-go.git
+
+   cd voltha-go
+   make help
+
+.. list-table:: make targets
+   :header-rows: 1
+   :widths: 20,50
+
+   * - Command
+     - Description
+   * - make lint
+     - syntax check sources
+   * - make lint-dockerfile
+     - syntax check docker config
+   * - make lint-mod
+     - syntax check golang dependencies
+
+.. list-table:: build & test targets
+   :header-rows: 1
+   :widths: 20,50
+
+   * - Command
+     - Description
+   * - make build
+     - Build core docker image
+   * - make test
+     - Requires docker, test local build
+   * - make sca
+     - Generate a static code analysis report
+
+.. list-table:: Developer targets
+   :header-rows: 1
+   :widths: 20,50
+
+   * - Command
+     - Description
+   * - make local-lib-go
+     - Create a local version of voltha-lib-go beneath vendor/
+   * - make local-protos
+     - Create a local version of voltha-protos beneath vendor/
+   * - make fmt
+     - Run gofmt on sources
+   * - make mod-update
+     - Update go mod files
diff --git a/release_notes/voltha_2.12.rst b/release_notes/voltha_2.12.rst
index d72cbca..25ad44f 100644
--- a/release_notes/voltha_2.12.rst
+++ b/release_notes/voltha_2.12.rst
@@ -59,9 +59,6 @@
 Component Versions in VOLTHA 2.12 release
 -----------------------------------------
 
-Component Versions in VOLTHA 2.11 release
------------------------------------------
-
 ONOS and Atomix
 +++++++++++++++
 
@@ -89,13 +86,13 @@
      -
    * - `ONOS 2.5 LTS <https://github.com/opennetworkinglab/onos/releases/tag/2.5.8>`_
      -
-     - ``-?-``
+     - ``2.5.8``
      -
      -
      -
    * - `ATOMIX <https://github.com/atomix/atomix/releases/tag/atomix-3.1.9>`_
      -
-     - ``-?-``
+     - ``3.1.9``
      -
      -
      -
@@ -104,7 +101,7 @@
 +++++++++
 
 .. list-table:: ONOS Apps
-   :widths: 30, 5, 5, 5, 5, 5
+   :widths: 30, 5, 5, 5, 5, 5, 5
    :header-rows: 2
 
    * - Component
@@ -113,24 +110,306 @@
      - with
      - Gerrit
      - Github
+     - Release
    * - Name
      - Version
      - Version
      - Chart
      - URL
      - URL
+     - Status
+   * -
+     -
+     -
+     -
+     -
+     -
+     -
+   * - `aaa <https://gerrit.opencord.org/gitweb?p=aaa.git;a=summary>`_
+     - N/A
+     - `2.10.3 <https://central.sonatype.com/artifact/org.opencord/aaa/2.10.3>`_
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/aaa/+/refs/tags/2.10.3>`__
+     - `X <https://github.com/opencord/aaa/tree/2.10.3>`__
+     -
+   * - `bng <https://gerrit.opencord.org/gitweb?p=bng.git;a=summary>`_
+     -
+     - ``2.4.0``
+     -
+     - `X <https://github.com/opencord/bng/tree/2.4.0>`__
+     - `X <https://gerrit.opencord.org/plugins/gitiles/bng/+/refs/tags/2.4.0>`__
+     - !
+   * - `dhcpl2relay <https://gerrit.opencord.org/gitweb?p=dhcpl2relay.git;a=summary>`_
+     -
+     - `2.10.0 <https://central.sonatype.com/artifact/org.opencord/dhcpl2relay/2.10.0>`_
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/dhcpl2relay/+/refs/tags/2.10.0>`__
+     - `X <https://github.com/opencord/dhcpl2relay/tree/2.10.0>`__
+     -
+   * - `igmpproxy <https://gerrit.opencord.org/gitweb?p=igmpproxy.git;a=summary>`_
+     -
+     - ``2.7.0``
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/igmpproxy/+/refs/tags/2.7.0>`__
+     - `X <https://github.com/opencord/igmpproxy/tree/2.7.0>`__
+     - !
+   * - `kafka <https://gerrit.opencord.org/gitweb?p=kafka-onos.git;a=summary>`_
+     -
+     - ``2.11.1``
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/kafka-onos/+/refs/tags/2.11.1>`__
+     - `X <https://github.com/opencord/kafka-onos/tree/2.11.1>`__
+     - !
+   * - `mcast <https://gerrit.opencord.org/gitweb?p=mcast.git;a=summary>`_
+     -
+     - ``2.8.0``
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/mcast/+/refs/tags/2.8.0>`__
+     - `X <https://github.com/opencord/mcast/tree/2.8.0>`__
+     - !
+   * - `olt <https://gerrit.opencord.org/gitweb?p=olt.git;a=summary>`_
+     -
+     - ``5.2.3``
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/olt/+/refs/tags/5.2.3>`__
+     - `X <https://github.com/opencord/olt/tree/5.2.3>`__
+     - !
+   * - `sadis <https://gerrit.opencord.org/gitweb?p=sadis.git;a=summary>`_
+     -
+     - `5.11.1 <https://central.sonatype.com/artifact/org.opencord/sadis/5.11.1>`_
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/sadis/+/refs/tags/5.11.1>`__
+     - `X <https://github.com/opencord/sadis/tree/5.11.1>`__
+     -
+   * - `pppoeagent <https://gerrit.opencord.org/plugins/gitiles/pppoeagent/>`_
+     -
+     - ``1.2.0``
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/pppoeagent/+/refs/tags/1.2.1>`__
+     - `X <https://github.com/opencord/pppoeagent/tree/1.2.1>`__
+     - !
+   * - `olttopology <https://gerrit.opencord.org/plugins/gitiles/olttopology/>`_
+     -
+     - ``1.2.0``
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/olttopology/+/refs/tags/1.2.1>`__
+     - `X <https://github.com/opencord/olttopology/tree/1.2.1>`__
+     - !
+
+VOLTHA Components
++++++++++++++++++
+
+.. list-table:: VOLTHA Components
+   :widths: 30, 5, 5, 5, 5, 5, 5
+   :header-rows: 2
+
+   * - Component
+     - VOLTHA
+     - Component
+     -
+     - Gerrit
+     - Github
+     - `Docker <https://hub.docker.com/search?q=voltha>`_
+   * - Name
+     - Version
+     - Version
+     - `with Chart <https://gerrit.opencord.org/gitweb?p=helm-charts.git;a=tree;f=bbsim>`_
+     - ULR
+     - URL
+     - URL
    * -
      -
      -
      -
      -
      -
-   * - `sadis <https://gerrit.opencord.org/gitweb?p=sadis.git;a=summary>`_
      -
-     - ``5.11.0``
+   * - `Helm Charts (voltha-helm-charts) <https://gerrit.opencord.org/gitweb?p=voltha-helm-charts.git;a=tree>`_
+     - ``3.2.2-dev1``
      -
-     - `X <https://gerrit.opencord.org/plugins/gitiles/sadis/+/refs/tags/5.11.0>`__
-     - `5.10.0 <https://github.com/opencord/sadis/tree/5.10.0>`__
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master>`__
+     - `X <https://github.com/opencord/voltha-helm-charts/tree/3.2.0>`__
+     -
+   * - `bbsim <https://gerrit.opencord.org/gitweb?p=bbsim.git;a=tree>`__
+     - ``1.14.4``
+     - ``4.8.6``
+     - `chart <https://gerrit.opencord.org/gitweb?p=helm-charts.git;a=tree;f=bbsim>`_
+     -
+     - `X <https://github.com/opencord/bbsim/tree/v1.14.4>`__
+     - `X <https://hub.docker.com/layers/voltha/bbsim/1.14.4/images/sha256-c23de193c1d7cf8d32c48edfbec4bfa6c47dbeecd4b31d040da0255eeab2ec58?context=explore>`__
+   * - `Bbsim-sadis-server <https://gerrit.opencord.org/gitweb?p=bbsim-sadis-server.git;a=tree>`_
+     -
+     - ``0.3.4``
+     - `0.3.2 <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/bbsim-sadis-server/Chart.yaml>`_
+     - `X <https://gerrit.opencord.org/plugins/gitiles/bbsim-sadis-server/+/refs/tags/v0.3.4>`_
+     - `X <https://github.com/opencord/bbsim-sadis-server/releases/tag/v0.3.4>`__
+     -
+   * - `ofagent-go <https://gerrit.opencord.org/gitweb?p=ofagent-go.git;a=tree>`_
+     - ``2.1.3``
+     - ``2.1.3``
+     - ``2.11.3``
+     -
+     - `X <https://github.com/opencord/ofagent-go>`__
+     - `1.1.4-? <https://hub.docker.com/layers/voltha/ofagent-go/1.1.4/images/sha256-8231111b69c8643c4981d64abff0a85d71f80763bb98632bb101e92b89882647?context=explore>`_
+   * - `openolt agent <https://gerrit.opencord.org/gitweb?p=openolt.git;a=tree>`_
+     -
+     - ``4.2.12``
+     -
+     -
+     - `X <https://github.com/opencord/openolt>`__
+     -
+   * - `voltctl <https://gerrit.opencord.org/gitweb?p=voltctl.git;a=tree>`_
+     - ``1.8.3``
+     -
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/voltctl/+/refs/tags/v1.8.3>`__
+     - `X <https://github.com/opencord/voltctl/tree/v1.8.3>`__
+     -
+   * - `voltha-go <https://gerrit.opencord.org/gitweb?p=voltha-go.git;a=tree>`_
+     - ``3.1.8``
+     - docker
+     - ``2.11.3``
+     - `X <https://gerrit.opencord.org/plugins/gitiles/voltha-go/+/refs/tags/v3.1.8>`__
+     - `X <https://github.com/opencord/voltha-go/tree/v3.1.8>`__
+     -
+   * - `voltha-lib-go <https://gerrit.opencord.org/plugins/gitiles/voltha-lib-go>`_
+     - ``2.11.3 (?)``
+     - ``7.3.2``
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/voltha-lib-go/+/refs/tags/v7.3.2>`__
+     - `X <https://github.com/opencord/voltha-lib-go/releases/tag/v7.3.2>`__
+     -
+   * - `voltha-onos <https://gerrit.opencord.org/gitweb?p=voltha-onos.git;a=tree>`_
+     -
+     - ``5.1.2``
+     - ``0.1.27``
+     - `X <https://gerrit.opencord.org/plugins/gitiles/voltha-onos/+/refs/tags/5.1.3>`__
+     - `X <https://github.com/opencord/voltha-onos/tree/5.1.3>`__
+     - `X <https://hub.docker.com/layers/voltha/voltha-onos/5.1.3/images/sha256-d9c686acf177ed823ff359dc43ba59aab05ae067be27c92e48c08b72f94b9ca3?context=explore>`__
+   * - `voltha-openonu-adapter-go <https://gerrit.opencord.org/gitweb?p=voltha-openonu-adapter-go.git;a=tree>`_
+     -
+     - ``2.7.3``
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/voltha-openonu-adapter-go/+/refs/tags/v2.7.3>`__
+     - `X <https://github.com/opencord/voltha-openonu-adapter-go/tree/v2.7.3>`__
+     - `X <https://hub.docker.com/layers/voltha/voltha-openonu-adapter-go/2.7.3/images/sha256-e9484a8963d08748af5766a6a8ce7f7485efb384488bcf93840ecc1142d7ad74?context=explore>`__
+   * - `voltha-openolt-adapter <https://gerrit.opencord.org/gitweb?p=voltha-openolt-adapter.git;a=tree>`_
+     - ``v4.2.12``
+     - ``4.2.6``
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/voltha-openolt-adapter/+/refs/tags/v4.2.12>`__
+     - `X <https://github.com/opencord/voltha-openolt-adapter/tree/v4.2.12>`__
+     - `X <https://hub.docker.com/layers/voltha/voltha-openolt-adapter/4.2.12/images/sha256-844eac272323dc8bca10880a111957a95839578b3210dd777be5ac9370aaa52e?context=explore>`__
+   * - `voltha-protos <https://gerrit.opencord.org/plugins/gitiles/voltha-protos>`_
+     -
+     - `5.3.8 <https://pypi.org/project/voltha-protos/5.3.8>`__
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/voltha-protos/+/refs/tags/v5.3.8>`__
+     - `X <https://github.com/opencord/voltha-protos/tree/v5.3.8>`__
+     -
+   * - `voltha-system-tests <https://github.com/opencord/voltha-system-tests/releases/tag/2.9.0>`__
+     - ``2.11.10``
+     -
+     -
+     - `X <https://gerrit.opencord.org/plugins/gitiles/voltha-system-tests/+/refs/tags/2.11.10>`__
+     - `X <https://github.com/opencord/voltha-system-tests/tree/2.11.10>`__
+     -
+   * - maclearner
+     - ``1.2.1``
+     -
+     -
+     -
+     -
+     -
+   * - ppoeagent
+     - ``1.2.1``
+     -
+     -
+     -
+     -
+     -
+   * - segmentrouting
+     - ``3.0.0``
+     -
+     -
+     -
+     -
+     -
+
+
+Helm Chart Versions
++++++++++++++++++++
+This section refers to the macro charts to deploy the required infrastructure and a (or many) VOLTHA stacks:
+
+.. list-table:: Helm Chart Versions
+   :widths: 30, 5, 5, 5, 5, 5
+   :header-rows: 2
+
+   * - Component
+     - VOLTHA
+     - Component
+     -
+     - Gerrit
+     - Github
+   * - Name
+     - Version
+     - Version
+     - with Chart
+     - URL
+     - URL
+   * -
+     -
+     -
+     -
+     -
+     -
+   * - Voltha-infra
+     - ``2.10.10``
+     -
+     -
+     -
+     -
+   * - Voltha-stack
+     - ``2.10.10``
+     -
+     -
+     -
+     -
+
+BAL Version
++++++++++++
+
+.. list-table:: Helm Chart Versions
+   :widths: 30, 5, 5, 5, 5, 5
+   :header-rows: 2
+
+   * - Component
+     - VOLTHA
+     - Component
+     -
+     - Gerrit
+     - Github
+   * - Name
+     - Version
+     - Version
+     - with Chart
+     - URL
+     - URL
+   * -
+     -
+     -
+     -
+     -
+     -
+   * - Broadcom abstraction layer (BAL)
+     -
+     - ``3.10.2.2``
+     -
+     -
+     -
+
+|
 
 Helm Chart Versions
 +++++++++++++++++++