diff --git a/.github/pr-custom-review.yml b/.github/pr-custom-review.yml
index fc1836866208..a453336bddb6 100644
--- a/.github/pr-custom-review.yml
+++ b/.github/pr-custom-review.yml
@@ -26,7 +26,7 @@ rules:
       - min_approvals: 1
         teams:
           - polkadot-review
-      - min_approvals: 2
+      - min_approvals: 1
         teams:
           - srlabs
 
diff --git a/.github/workflows/auto-label-issues.yml b/.github/workflows/auto-label-issues.yml
new file mode 100644
index 000000000000..12ffce702cdc
--- /dev/null
+++ b/.github/workflows/auto-label-issues.yml
@@ -0,0 +1,17 @@
+# If the author of the issues is not a contributor to the project, label
+# the issue with 'Z0-unconfirmed'
+
+name: Label New Issues
+on:
+  issues:
+    types: [opened]
+
+jobs:
+  label-new-issues:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Label drafts
+        uses: andymckay/labeler@e6c4322d0397f3240f0e7e30a33b5c5df2d39e90 # 1.0.4
+        if: github.event.issue.author_association == 'NONE'
+        with:
+          add-labels: "I10-unconfirmed"
diff --git a/.github/workflows/check-labels.yml b/.github/workflows/check-labels.yml
index ea16bb9f3e4a..83b52e823132 100644
--- a/.github/workflows/check-labels.yml
+++ b/.github/workflows/check-labels.yml
@@ -22,7 +22,7 @@ jobs:
           API_BASE: https://api.github.com/repos
           REPO: ${{ github.repository }}
           RULES_PATH: labels/ruled_labels
-          CHECK_SPECS: "[DRAFT]specs_monorepo.yaml"
+          CHECK_SPECS: "specs_polkadot-sdk.yaml"
         run: |
           echo "REPO: ${REPO}"
           echo "GITHUB_PR: ${GITHUB_PR}"
@@ -32,10 +32,6 @@ jobs:
 
           # Temporary, before https://github.com/paritytech/labels/pull/29 is not merged
           git clone https://github.com/paritytech/labels
-          cd labels
-          git fetch origin the-right-joyce-monorepo-labels
-          git checkout the-right-joyce-monorepo-labels
-          cd ..
 
           # Fetch the labels for the PR under test
           echo "Fetch the labels for $API_BASE/${REPO}/pulls/${GITHUB_PR}"
diff --git a/.github/workflows/check-licenses.yml b/.github/workflows/check-licenses.yml
new file mode 100644
index 000000000000..39104c3a4a81
--- /dev/null
+++ b/.github/workflows/check-licenses.yml
@@ -0,0 +1,26 @@
+name: Check licenses
+
+on:
+  pull_request:
+
+jobs:
+  check-licenses:
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+      - uses: actions/setup-node@v3.8.1
+        with:
+          node-version: '18.x'
+          registry-url: 'https://npm.pkg.github.com'
+          scope: '@paritytech'
+      - name: Check the licenses
+        run: |
+          shopt -s globstar
+
+          npx --yes https://github.com/paritytech/license-scanner scan \
+            --ensure-licenses=Apache-2.0 \
+            --ensure-licenses=GPL-3.0-only \
+            ./**/*.rs
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/pr-custom-review.yml b/.github/workflows/pr-custom-review.yml
index 345f1f859d7c..b15d20c696fe 100644
--- a/.github/workflows/pr-custom-review.yml
+++ b/.github/workflows/pr-custom-review.yml
@@ -39,4 +39,4 @@ jobs:
       - name: pr-custom-review
         uses: paritytech/pr-custom-review@master
         with:
-          checks-reviews-api: http://pcr.parity-stg.parity.io/api/v1/check_reviews
+          checks-reviews-api: http://pcr.parity-prod.parity.io/api/v1/check_reviews
diff --git a/.gitlab/pipeline/build.yml b/.gitlab/pipeline/build.yml
index 290ef8c8f72d..5782b4745e70 100644
--- a/.gitlab/pipeline/build.yml
+++ b/.gitlab/pipeline/build.yml
@@ -18,11 +18,13 @@ build-linux-stable:
     # Ensure we run the UI tests.
     RUN_UI_TESTS: 1
   script:
-    - time cargo build --locked --profile testnet --features pyroscope,fast-runtime --bin polkadot
+    - time cargo build --locked --profile testnet --features pyroscope,fast-runtime --bin polkadot --bin polkadot-prepare-worker --bin polkadot-execute-worker
     # pack artifacts
     - mkdir -p ./artifacts
     - VERSION="${CI_COMMIT_REF_NAME}" # will be tag or branch name
     - mv ./target/testnet/polkadot ./artifacts/.
+    - mv ./target/testnet/polkadot-prepare-worker ./artifacts/.
+    - mv ./target/testnet/polkadot-execute-worker ./artifacts/.
     - pushd artifacts
     - sha256sum polkadot | tee polkadot.sha256
     - shasum -c polkadot.sha256
@@ -64,10 +66,12 @@ build-malus:
     - .run-immediately
     - .collect-artifacts
   script:
-    - time cargo build --locked --profile testnet --verbose -p polkadot-test-malus
+    - time cargo build --locked --profile testnet --verbose -p polkadot-test-malus --bin malus --bin polkadot-prepare-worker --bin polkadot-execute-worker
     # pack artifacts
     - mkdir -p ./artifacts
     - mv ./target/testnet/malus ./artifacts/.
+    - mv ./target/testnet/polkadot-execute-worker ./artifacts/.
+    - mv ./target/testnet/polkadot-prepare-worker ./artifacts/.
     - echo -n "${CI_COMMIT_REF_NAME}" > ./artifacts/VERSION
     - echo -n "${CI_COMMIT_REF_NAME}-${CI_COMMIT_SHORT_SHA}" > ./artifacts/EXTRATAG
     - echo "polkadot-test-malus = $(cat ./artifacts/VERSION) (EXTRATAG = $(cat ./artifacts/EXTRATAG))"
diff --git a/.gitlab/pipeline/check.yml b/.gitlab/pipeline/check.yml
index a282ec66fe71..123e02a8cd1c 100644
--- a/.gitlab/pipeline/check.yml
+++ b/.gitlab/pipeline/check.yml
@@ -20,7 +20,7 @@ check-try-runtime:
     - time cargo check --locked -p parachain-template-node --features try-runtime
     # add after https://github.com/paritytech/substrate/pull/14502 is merged
     # experimental code may rely on try-runtime and vice-versa
-    # - time cargo check --locked --features try-runtime,experimental
+    - time cargo check --locked --features try-runtime,experimental
 
 cargo-fmt-manifest:
   stage: check
@@ -57,21 +57,6 @@ cargo-deny-licenses:
     paths:
       - deny.log
 
-spellcheck:
-  stage: check
-  extends:
-    - .kubernetes-env
-    - .common-refs
-  script:
-    - cargo spellcheck --version
-    # compare with the commit parent to the PR, given it's from a default branch
-    - git fetch origin +${CI_DEFAULT_BRANCH}:${CI_DEFAULT_BRANCH}
-    - echo "___Spellcheck is going to check your diff___"
-    - cargo spellcheck list-files -vvv $(git diff --diff-filter=AM --name-only $(git merge-base ${CI_COMMIT_SHA} ${CI_DEFAULT_BRANCH} -- :^bridges))
-    - time cargo spellcheck check -vvv --cfg=.gitlab/spellcheck.toml --checkers hunspell --code 1
-      $(git diff --diff-filter=AM --name-only $(git merge-base ${CI_COMMIT_SHA} ${CI_DEFAULT_BRANCH} -- :^bridges))
-  allow_failure: true
-
 # from substrate
 # not sure if it's needed in monorepo
 check-dependency-rules:
diff --git a/.gitlab/pipeline/test.yml b/.gitlab/pipeline/test.yml
index 23202005045b..ca8da4ea7566 100644
--- a/.gitlab/pipeline/test.yml
+++ b/.gitlab/pipeline/test.yml
@@ -34,7 +34,7 @@ test-linux-stable:
         --release \
         --verbose \
         --no-fail-fast \
-        --features runtime-benchmarks,try-runtime \
+        --features runtime-benchmarks,try-runtime,experimental \
         --partition count:${CI_NODE_INDEX}/${CI_NODE_TOTAL}
     # run runtime-api tests with `enable-staging-api` feature on the 1st node
     - if [ ${CI_NODE_INDEX} == 1 ]; then time cargo nextest run -p sp-api-test --features enable-staging-api; fi
diff --git a/docker/malus_injected.Dockerfile b/docker/malus_injected.Dockerfile
index ecffd2c4f9b4..762a2e442c82 100644
--- a/docker/malus_injected.Dockerfile
+++ b/docker/malus_injected.Dockerfile
@@ -39,7 +39,7 @@ RUN apt-get update && \
 
 
 # add adder-collator binary to docker image
-COPY ./artifacts/malus /usr/local/bin
+COPY ./artifacts/malus ./artifacts/polkadot-execute-worker ./artifacts/polkadot-prepare-worker /usr/local/bin
 
 USER nonroot
 
diff --git a/docker/polkadot_injected_debug.Dockerfile b/docker/polkadot_injected_debug.Dockerfile
index 3dd62f7ba56f..f7f764d335a2 100644
--- a/docker/polkadot_injected_debug.Dockerfile
+++ b/docker/polkadot_injected_debug.Dockerfile
@@ -32,13 +32,15 @@ RUN apt-get update && \
 	chown -R polkadot:polkadot /data && \
 	ln -s /data /polkadot/.local/share/polkadot
 
-# add polkadot binary to docker image
-COPY ./artifacts/polkadot /usr/local/bin
+# add polkadot binaries to docker image
+COPY ./artifacts/polkadot ./artifacts/polkadot-execute-worker ./artifacts/polkadot-prepare-worker /usr/local/bin
 
 USER polkadot
 
 # check if executable works in this container
 RUN /usr/local/bin/polkadot --version
+RUN /usr/local/bin/polkadot-execute-worker --version
+RUN /usr/local/bin/polkadot-prepare-worker --version
 
 EXPOSE 30333 9933 9944
 VOLUME ["/polkadot"]
diff --git a/docker/polkadot_injected_release.Dockerfile b/docker/polkadot_injected_release.Dockerfile
index ba0a79e78187..87ae7ac27dc0 100644
--- a/docker/polkadot_injected_release.Dockerfile
+++ b/docker/polkadot_injected_release.Dockerfile
@@ -44,6 +44,8 @@ USER polkadot
 
 # check if executable works in this container
 RUN /usr/bin/polkadot --version
+RUN /usr/local/bin/polkadot-execute-worker --version
+RUN /usr/local/bin/polkadot-prepare-worker --version
 
 EXPOSE 30333 9933 9944
 VOLUME ["/polkadot"]
diff --git a/polkadot/Cargo.toml b/polkadot/Cargo.toml
index 561b49ab4204..925d6589dc0b 100644
--- a/polkadot/Cargo.toml
+++ b/polkadot/Cargo.toml
@@ -159,6 +159,16 @@ assets = [
 		"/usr/bin/",
 		"755",
 	],
+	[
+		"target/release/polkadot-prepare-worker",
+		"/usr/lib/polkadot/",
+		"755"
+	],
+	[
+		"target/release/polkadot-execute-worker",
+		"/usr/lib/polkadot/",
+		"755"
+	],
 	[
 		"scripts/packaging/polkadot.service",
 		"/lib/systemd/system/",
diff --git a/polkadot/node/service/chain-specs/kusama.json b/polkadot/node/service/chain-specs/kusama.json
index 3d16e3aab283..4ee48cf7d984 100644
--- a/polkadot/node/service/chain-specs/kusama.json
+++ b/polkadot/node/service/chain-specs/kusama.json
@@ -42,7 +42,9 @@
     "/dns/kusama-bootnode.radiumblock.com/tcp/30333/p2p/12D3KooWGzKffWe7JSXeKMQeSQC5xfBafZtgBDCuBVxmwe2TJRuc",
     "/dns/ksm-bootnode.stakeworld.io/tcp/30300/p2p/12D3KooWFRin7WWVS6RgUsSpkfUHSv4tfGKnr2zJPmf1pbMv118H",
     "/dns/ksm-bootnode.stakeworld.io/tcp/30301/ws/p2p/12D3KooWFRin7WWVS6RgUsSpkfUHSv4tfGKnr2zJPmf1pbMv118H",
-    "/dns/ksm-bootnode.stakeworld.io/tcp/30302/wss/p2p/12D3KooWFRin7WWVS6RgUsSpkfUHSv4tfGKnr2zJPmf1pbMv118H"
+    "/dns/ksm-bootnode.stakeworld.io/tcp/30302/wss/p2p/12D3KooWFRin7WWVS6RgUsSpkfUHSv4tfGKnr2zJPmf1pbMv118H",
+    "/dns/ksm14.rotko.net/tcp/35224/wss/p2p/12D3KooWAa5THTw8HPfnhEei23HdL8P9McBXdozG2oTtMMksjZkK",
+    "/dns/ksm14.rotko.net/tcp/33224/p2p/12D3KooWAa5THTw8HPfnhEei23HdL8P9McBXdozG2oTtMMksjZkK"
   ],
   "telemetryEndpoints": [
     [
diff --git a/polkadot/node/service/chain-specs/polkadot.json b/polkadot/node/service/chain-specs/polkadot.json
index c648b425a472..6452c892715c 100644
--- a/polkadot/node/service/chain-specs/polkadot.json
+++ b/polkadot/node/service/chain-specs/polkadot.json
@@ -42,7 +42,9 @@
     "/dns/polkadot-bootnode.radiumblock.com/tcp/30333/p2p/12D3KooWNwWNRrPrTk4qMah1YszudMjxNw2qag7Kunhw3Ghs9ea5",
     "/dns/dot-bootnode.stakeworld.io/tcp/30310/p2p/12D3KooWAb5MyC1UJiEQJk4Hg4B2Vi3AJdqSUhTGYUqSnEqCFMFg",
     "/dns/dot-bootnode.stakeworld.io/tcp/30311/ws/p2p/12D3KooWAb5MyC1UJiEQJk4Hg4B2Vi3AJdqSUhTGYUqSnEqCFMFg",
-    "/dns/dot-bootnode.stakeworld.io/tcp/30312/wss/p2p/12D3KooWAb5MyC1UJiEQJk4Hg4B2Vi3AJdqSUhTGYUqSnEqCFMFg"
+    "/dns/dot-bootnode.stakeworld.io/tcp/30312/wss/p2p/12D3KooWAb5MyC1UJiEQJk4Hg4B2Vi3AJdqSUhTGYUqSnEqCFMFg",
+    "/dns/dot14.rotko.net/tcp/35214/wss/p2p/12D3KooWPyEvPEXghnMC67Gff6PuZiSvfx3fmziKiPZcGStZ5xff",
+    "/dns/dot14.rotko.net/tcp/33214/p2p/12D3KooWPyEvPEXghnMC67Gff6PuZiSvfx3fmziKiPZcGStZ5xff"
   ],
   "telemetryEndpoints": [
     [
diff --git a/polkadot/node/service/chain-specs/westend.json b/polkadot/node/service/chain-specs/westend.json
index 629dfc86ae11..e57786f78a64 100644
--- a/polkadot/node/service/chain-specs/westend.json
+++ b/polkadot/node/service/chain-specs/westend.json
@@ -33,7 +33,9 @@
     "/dns/westend-bootnode.radiumblock.com/tcp/30333/p2p/12D3KooWJBowJuX1TaWNWHt8Dz8z44BoCZunLCfFqxA2rLTn6TBD",
     "/dns/wnd-bootnode.stakeworld.io/tcp/30320/p2p/12D3KooWBYdKipcNbrV5rCbgT5hco8HMLME7cE9hHC3ckqCKDuzP",
     "/dns/wnd-bootnode.stakeworld.io/tcp/30321/ws/p2p/12D3KooWBYdKipcNbrV5rCbgT5hco8HMLME7cE9hHC3ckqCKDuzP",
-    "/dns/wnd-bootnode.stakeworld.io/tcp/30322/wss/p2p/12D3KooWBYdKipcNbrV5rCbgT5hco8HMLME7cE9hHC3ckqCKDuzP"
+    "/dns/wnd-bootnode.stakeworld.io/tcp/30322/wss/p2p/12D3KooWBYdKipcNbrV5rCbgT5hco8HMLME7cE9hHC3ckqCKDuzP",
+    "/dns/wnd14.rotko.net/tcp/35234/wss/p2p/12D3KooWLK8Zj1uZ46phU3vQwiDVda8tB76S8J26rXZQLHpwWkDJ",
+    "/dns/wnd14.rotko.net/tcp/33234/p2p/12D3KooWLK8Zj1uZ46phU3vQwiDVda8tB76S8J26rXZQLHpwWkDJ"
   ],
   "telemetryEndpoints": [
     [
diff --git a/substrate/.github/workflows/auto-label-issues.yml b/substrate/.github/workflows/auto-label-issues.yml
index 629966ed3961..12ffce702cdc 100644
--- a/substrate/.github/workflows/auto-label-issues.yml
+++ b/substrate/.github/workflows/auto-label-issues.yml
@@ -14,4 +14,4 @@ jobs:
         uses: andymckay/labeler@e6c4322d0397f3240f0e7e30a33b5c5df2d39e90 # 1.0.4
         if: github.event.issue.author_association == 'NONE'
         with:
-          add-labels: "J2-unconfirmed"
+          add-labels: "I10-unconfirmed"