This chapter guides you through upgrading your ZK application to a newer version or a different edition. It covers:

  • Version upgrade: Step-by-step process, breaking changes by version, and a checklist to estimate migration effort
  • Edition upgrade: How to move from Community Edition (CE) to Professional Edition (PE) or Enterprise Edition (EE)
  • Removed APIs: A complete list of removed Java APIs and ZUL attributes for ZK 10

Upgrade references — release notes, migration guides, and new-features articles — are published for every major and minor release.