How do I upgrade to a newer release of Plone?

When upgrading to a newer release of Plone, it is important to run the migration procedure, since internal structures in Plone might have changed since the last version. This is the general procedure for upgrading.

Before you start upgrading anything, make sure you have a backup.

• If you're upgrading to a new minor version of Plone (e.g. from 2.5.1 to 2.5.2), the general upgrade procedure should be sufficient.
• If you are upgrading to a new major version of Plone (e.g. from 2.5.x to 3.0.x or from 3.0.x to 3.5.x), make sure you read the Plone Upgrade Guide, and especially the version-specific upgrade notes.