diff --git a/.buildkite/code-freeze.yml b/.buildkite/code-freeze.yml
index 1cf78e3c066d..933636906759 100644
--- a/.buildkite/code-freeze.yml
+++ b/.buildkite/code-freeze.yml
@@ -13,6 +13,8 @@ steps:
 
       echo '--- :snowflake: Start Code Freeze'
       bundle exec fastlane code_freeze version:"${RELEASE_VERSION}" skip_confirm:true
+    # Runs on `mac-metal` so it can use the bot git identity from `use-bot-for-git` (only available
+    # on these agents) for its git write operations (commit/push/PR).
     agents:
        queue: "mac-metal"
     retry:
diff --git a/.buildkite/commands/download-translations.sh b/.buildkite/commands/download-translations.sh
new file mode 100755
index 000000000000..7f873e516251
--- /dev/null
+++ b/.buildkite/commands/download-translations.sh
@@ -0,0 +1,10 @@
+#!/bin/bash -eu
+
+echo "--- :robot_face: Use bot for git operations"
+source use-bot-for-git
+
+echo "--- :ruby: Setup Ruby Tools"
+install_gems
+
+echo "--- :globe_with_meridians: Download translations and open/update the PR"
+bundle exec fastlane update_translations
diff --git a/.buildkite/complete-code-freeze.yml b/.buildkite/complete-code-freeze.yml
index 310766f39659..20e16f10e7f0 100644
--- a/.buildkite/complete-code-freeze.yml
+++ b/.buildkite/complete-code-freeze.yml
@@ -15,6 +15,8 @@ steps:
 
       echo '--- :snowflake: Complete Code Freeze'
       bundle exec fastlane complete_code_freeze skip_confirm:true
+    # Runs on `mac-metal` so it can use the bot git identity from `use-bot-for-git` (only available
+    # on these agents) for its git write operations (commit/push/PR).
     agents:
        queue: "mac-metal"
     retry:
diff --git a/.buildkite/finalize-hotfix-release.yml b/.buildkite/finalize-hotfix-release.yml
index 4af22b5700cc..861efa287ac0 100644
--- a/.buildkite/finalize-hotfix-release.yml
+++ b/.buildkite/finalize-hotfix-release.yml
@@ -15,6 +15,8 @@ steps:
 
       echo '--- :shipit: Finalize hotfix'
       bundle exec fastlane finalize_hotfix_release skip_confirm:true
+    # Runs on `mac-metal` so it can use the bot git identity from `use-bot-for-git` (only available
+    # on these agents) for its git write operations (commit/push/PR).
     agents:
        queue: mac-metal
     retry:
diff --git a/.buildkite/finalize-release.yml b/.buildkite/finalize-release.yml
index b541f8def406..b7868fb9fa1b 100644
--- a/.buildkite/finalize-release.yml
+++ b/.buildkite/finalize-release.yml
@@ -15,6 +15,8 @@ steps:
 
       echo '--- :shipit: Finalize Release'
       bundle exec fastlane finalize_release skip_confirm:true
+    # Runs on `mac-metal` so it can use the bot git identity from `use-bot-for-git` (only available
+    # on these agents) for its git write operations (commit/push/PR).
     agents:
        queue: "mac-metal"
     retry:
diff --git a/.buildkite/new-beta-release.yml b/.buildkite/new-beta-release.yml
index c684880bb623..ab56f79c6851 100644
--- a/.buildkite/new-beta-release.yml
+++ b/.buildkite/new-beta-release.yml
@@ -13,6 +13,8 @@ steps:
 
       echo '--- :shipit: New Beta Release'
       bundle exec fastlane new_beta_release skip_confirm:true
+    # Runs on `mac-metal` so it can use the bot git identity from `use-bot-for-git` (only available
+    # on these agents) for its git write operations (commit/push/PR).
     agents:
        queue: "mac-metal"
     retry:
diff --git a/.buildkite/new-hotfix-release.yml b/.buildkite/new-hotfix-release.yml
index 6fea293dc6be..94eb18a41661 100644
--- a/.buildkite/new-hotfix-release.yml
+++ b/.buildkite/new-hotfix-release.yml
@@ -13,6 +13,8 @@ steps:
 
       echo '--- :shipit: Start new hotfix'
       bundle exec fastlane new_hotfix_release version_name:"$RELEASE_VERSION" build_code:"$BUILD_CODE" skip_confirm:true
+    # Runs on `mac-metal` so it can use the bot git identity from `use-bot-for-git` (only available
+    # on these agents) for its git write operations (commit/push/PR).
     agents:
        queue: mac-metal
     retry:
diff --git a/.buildkite/publish-release.yml b/.buildkite/publish-release.yml
index a75faddbd52e..80fdb10d3c3d 100644
--- a/.buildkite/publish-release.yml
+++ b/.buildkite/publish-release.yml
@@ -15,6 +15,8 @@ steps:
 
       echo '--- :package: Publish Release'
       bundle exec fastlane publish_release skip_confirm:true
+    # Runs on `mac-metal` so it can use the bot git identity from `use-bot-for-git` (only available
+    # on these agents) for its git write operations (commit/push/PR).
     agents:
        queue: mac-metal
     retry:
diff --git a/.buildkite/schedules/download-translations.yml b/.buildkite/schedules/download-translations.yml
new file mode 100644
index 000000000000..76cbbce96557
--- /dev/null
+++ b/.buildkite/schedules/download-translations.yml
@@ -0,0 +1,25 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/buildkite/pipeline-schema/main/schema.json
+---
+
+# Runs on a daily schedule (configured in the Buildkite UI, ~06:00 UTC) to sync the latest
+# translations from GlotPress into a single rolling `translations/daily-update` PR.
+#
+# Runs on `mac-metal` (like the release code-freeze/finalize lanes) because this job commits,
+# pushes and opens a PR, which needs the bot git identity from `use-bot-for-git` — that command
+# is only available on those agents.
+
+agents:
+  queue: "mac-metal"
+
+steps:
+  - label: ":globe_with_meridians: Download Translations"
+    command: .buildkite/commands/download-translations.sh
+    plugins: [$CI_TOOLKIT]
+
+# Failure notifications are disabled for now. If re-enabled, they go to #wpmobile.
+# notify:
+#   - slack:
+#       channels:
+#         - "#wpmobile"
+#       message: "Failed to sync translations from GlotPress."
+#     if: build.state == "failed"
diff --git a/.buildkite/update-release-notes.yml b/.buildkite/update-release-notes.yml
index 3b774014a6b8..b79219be244a 100644
--- a/.buildkite/update-release-notes.yml
+++ b/.buildkite/update-release-notes.yml
@@ -16,6 +16,8 @@ steps:
 
       echo '--- :memo: Update Release Notes'
       bundle exec fastlane update_appstore_strings version:${RELEASE_VERSION}
+    # Runs on `mac-metal` so it can use the bot git identity from `use-bot-for-git` (only available
+    # on these agents) for its git write operations (commit/push/PR).
     agents:
        queue: "mac-metal"
     retry:
diff --git a/Gemfile b/Gemfile
index 40dfbdd2cfbd..b1bb7f7b6d55 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,9 +9,11 @@ gem 'fastlane', '~> 2'
 
 gem 'fastlane-plugin-firebase_app_distribution', '~> 1.0'
 gem 'fastlane-plugin-sentry'
-gem 'fastlane-plugin-wpmreleasetoolkit', '~> 14.7'
+# TEMPORARY: point at the release-toolkit branch to validate the new `find_or_create_pull_request`
+# action used by the `update_translations` lane. Revert to `~> 14.7` once it ships in a tagged release.
+# gem 'fastlane-plugin-wpmreleasetoolkit', '~> 14.7'
+gem 'fastlane-plugin-wpmreleasetoolkit', git: 'https://github.com/wordpress-mobile/release-toolkit', branch: 'add/find-or-create-pull-request'
 # gem 'fastlane-plugin-wpmreleasetoolkit', path: '../../release-toolkit'
-# gem 'fastlane-plugin-wpmreleasetoolkit', git: 'https://github.com/wordpress-mobile/release-toolkit', branch: ''
 
 ### Gems needed only for generating Promo Screenshots
 group :screenshots, optional: true do
diff --git a/Gemfile.lock b/Gemfile.lock
index ab185a260b27..a94080d4fa52 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,3 +1,27 @@
+GIT
+  remote: https://github.com/wordpress-mobile/release-toolkit
+  revision: 77cdeac5098b460ac6faba189f7e6a4f3d642c25
+  branch: add/find-or-create-pull-request
+  specs:
+    fastlane-plugin-wpmreleasetoolkit (14.7.0)
+      buildkit (~> 1.5)
+      chroma (= 0.2.0)
+      diffy (~> 3.3)
+      dotenv (~> 2.8)
+      fastlane (~> 2.235)
+      gettext (~> 3.5)
+      git (~> 1.3)
+      google-cloud-storage (~> 1.31)
+      java-properties (~> 0.3.0)
+      nokogiri (~> 1.19, >= 1.19.3)
+      octokit (~> 6.1)
+      parallel (~> 1.14)
+      plist (~> 3.1)
+      progress_bar (~> 1.3)
+      rake (>= 12.3, < 14.0)
+      rake-compiler (~> 1.0)
+      xcodeproj (~> 1.22)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -167,24 +191,6 @@ GEM
       google-apis-firebaseappdistribution_v1alpha (>= 0.12.0)
     fastlane-plugin-sentry (1.29.0)
       os (~> 1.1, >= 1.1.4)
-    fastlane-plugin-wpmreleasetoolkit (14.7.0)
-      buildkit (~> 1.5)
-      chroma (= 0.2.0)
-      diffy (~> 3.3)
-      dotenv (~> 2.8)
-      fastlane (~> 2.235)
-      gettext (~> 3.5)
-      git (~> 1.3)
-      google-cloud-storage (~> 1.31)
-      java-properties (~> 0.3.0)
-      nokogiri (~> 1.19, >= 1.19.3)
-      octokit (~> 6.1)
-      parallel (~> 1.14)
-      plist (~> 3.1)
-      progress_bar (~> 1.3)
-      rake (>= 12.3, < 14.0)
-      rake-compiler (~> 1.0)
-      xcodeproj (~> 1.22)
     fastlane-sirp (1.1.0)
     fiddle (1.1.8)
     forwardable (1.4.0)
@@ -378,7 +384,7 @@ DEPENDENCIES
   fastlane (~> 2)
   fastlane-plugin-firebase_app_distribution (~> 1.0)
   fastlane-plugin-sentry
-  fastlane-plugin-wpmreleasetoolkit (~> 14.7)
+  fastlane-plugin-wpmreleasetoolkit!
   rmagick (~> 7.0)
 
 BUNDLED WITH
diff --git a/fastlane/lanes/localization.rb b/fastlane/lanes/localization.rb
index 528c817646cc..6cf97a9689a1 100644
--- a/fastlane/lanes/localization.rb
+++ b/fastlane/lanes/localization.rb
@@ -375,6 +375,65 @@
     )
   end
 
+  TRANSLATIONS_SYNC_BRANCH = 'translations/daily-update'
+
+  #####################################################################################
+  # update_translations
+  # -----------------------------------------------------------------------------------
+  # Downloads the latest WordPress & Jetpack translations from GlotPress and opens (or
+  # refreshes) a single rolling Pull Request, so `trunk` stays continuously localized.
+  # Intended to run on a daily schedule.
+  #
+  # Each run resets `translations/daily-update` to `trunk` and re-downloads, so the PR
+  # always shows the complete current translation delta against `trunk` (no accumulation).
+  # If GlotPress has nothing new, no commit is made and the lane exits without a PR.
+  # -----------------------------------------------------------------------------------
+  # Usage:
+  # bundle exec fastlane update_translations
+  #####################################################################################
+  lane :update_translations do
+    Fastlane::Helper::GitHelper.checkout_and_pull(DEFAULT_BRANCH)
+
+    # Reset the rolling branch to the tip of `trunk` so each run produces a clean delta against it.
+    Fastlane::Helper::GitHelper.delete_local_branch_if_exists!(TRANSLATIONS_SYNC_BRANCH)
+    Fastlane::Helper::GitHelper.create_branch(TRANSLATIONS_SYNC_BRANCH, from: DEFAULT_BRANCH)
+
+    download_translations
+
+    # `download_translations` commits when GlotPress has updates; if nothing changed, HEAD still
+    # points at `trunk` and there is nothing to open a PR for.
+    if Fastlane::Helper::GitHelper.point_to_same_commit?(DEFAULT_BRANCH, 'HEAD')
+      UI.important('No new translations from GlotPress today; nothing to sync.')
+      next
+    end
+
+    # Prune translations whose key is no longer in the source strings (GlotPress can still serve them),
+    # which would otherwise fail Lint's `ExtraTranslation` check. Done as a separate commit on top of the
+    # download so the PR shows exactly what was pruned vs. what was downloaded.
+    main_res = File.join('WordPress', 'src', 'main', 'res')
+    jetpack_res = File.join('WordPress', 'src', 'jetpack', 'res')
+    android_prune_orphaned_translations(res_dir: main_res)
+    android_prune_orphaned_translations(
+      res_dir: jetpack_res,
+      additional_source_strings_paths: [File.join(main_res, 'values', 'strings.xml')]
+    )
+    Fastlane::Helper::GitHelper.commit(message: 'Prune orphaned translations', files: :all)
+
+    push_to_git_remote(remote_branch: TRANSLATIONS_SYNC_BRANCH, tags: false, force: true, set_upstream: true)
+
+    # `find_or_create_pull_request` resolves the GitHub token the standard way (GITHUB_TOKEN) and only
+    # opens a PR when none is already open; the force-push above already refreshed any existing one.
+    pr_url = find_or_create_pull_request(
+      repository: GITHUB_REPO,
+      title: 'Update translations',
+      body: 'Automated daily translation sync from GlotPress. Opened by the `download-translations` scheduled pipeline.',
+      head: TRANSLATIONS_SYNC_BRANCH,
+      base: DEFAULT_BRANCH,
+      labels: ['Localization']
+    )
+    UI.success("Translations PR: #{pr_url}")
+  end
+
   # Updates the `.po` file at the given `po_path` using the content of the `sources` files,
   # interpolating `release_version` where appropriate.
   # Internally, this calls the `gp_update_metadata_source` release toolkit action and adds Git management to it.