This PR is a preview of the release that release-plan has prepared. To release you should just merge this PR 👍

Release (2025-12-10)

• ember-cli 6.10.0-alpha.1 (minor)
• @ember-tooling/classic-build-addon-blueprint 6.10.0-alpha.1 (minor)
• @ember-tooling/classic-build-app-blueprint 6.10.0-alpha.1 (minor)
• @ember-tooling/blueprint-blueprint 0.3.0 (minor)
• @ember-tooling/blueprint-model 0.5.0 (minor)

🚀 Enhancement

• ember-cli, @ember-tooling/classic-build-addon-blueprint, @ember-tooling/classic-build-app-blueprint
  • #10873 Prepare 6.10 Alpha (@mansona)
  • #10853 Promote Beta and update all dependencies for 6.8 release (@mansona)
• ember-cli
  • #10870 Upgrade broccoli (@kategengler)
• ember-cli, @ember-tooling/classic-build-addon-blueprint, @ember-tooling/classic-build-app-blueprint, @ember-tooling/blueprint-blueprint, @ember-tooling/blueprint-model
  • #10856 Prepare 6.9 Beta (@mansona)

🐛 Bug Fix

• @ember-tooling/classic-build-app-blueprint, ember-cli
  • #10876 bump minimum node version to 20.19 (@mansona)

📝 Documentation

• ember-cli
  • #10857 Update RELEASE.md with more notes (@mansona)

🏠 Internal

• ember-cli
  • #10878 stop using internal package cache for smoke-test-slow (@mansona)
  • #10863 Missed a script -- fix updating output repos (@kategengler)
  • #10862 Fix typo in output repo workflow (@kategengler)
  • #10861 Fix output repo generation with new tag format (@kategengler)
• ember-cli, @ember-tooling/classic-build-addon-blueprint, @ember-tooling/classic-build-app-blueprint
  • #10854 Prepare Beta Release (@mansona)

Committers: 2

• Chris Manson (@mansona)
• Katie Gengler (@kategengler)