The following guides will help you upgrade your project.
There are also key points to help you upgrade your project or module to Silverstripe CMS 4. Upgrading a module is very similar to upgrading a Project. The module upgrade guide assumes familiarity with the project upgrade guide.
Staying up to date with CMS releases
Guidance on upgrading your website with new recipe releases
Upgrading a module
Upgrade your module to be compatible with Silverstripe CMS 4 and make it easy for your users to upgrade.
Migrating off CWP CMS recipe
Migrate your project off the Common Web Platform CMS recipe v2
Upgrading to Silverstripe CMS 4
Upgrade your project Silverstripe CMS 4 and keep it up to date with the latest fixes, security patches and new features.