11.1

• OOP Hooks introduced

Exceptions

• hook_hook_info()
• hook_module_implements_alter()
• hook_install()
• hook_install_tasks()
• hook_install_tasks_alter()
• hook_post_update_NAME()
• hook_removed_post_updates()
• hook_requirements()
• hook_schema()
• hook_uninstall()
• hook_update_dependencies()
• hook_update_last_removed()
• hook_update_N()
• hook_preprocess_HOOK()
• hooks implemented BY themes
• Alter hooks implemented BY themes
• Hooks implemented by modules on BEHALF of a theme

11.2

• Add hook_runtime_requirements and hook_runtime_requirements_alter
• Add hook_update_requirements and hook_update_requirements_alter
• Add Install InstallRequirementsInterface
• Preprocess functions in modules
• template_preprocess_HOOK
• hook_hook_info
• hook_module_implements_alter Order parameter on hooks
• hook_module_implements_alter RemoveHook attribute
• hook_module_implements_alter ReorderHook attribute
• LegacyModuleImplementsAlter

Exceptions

• hook_install()
• hook_install_tasks()
• hook_install_tasks_alter()
• hook_post_update_NAME()
• hook_removed_post_updates()
• hook_schema()
• hook_uninstall()
• hook_update_dependencies()
• hook_update_last_removed()
• hook_update_N()
• hooks implemented BY themes
• Alter hooks implemented BY themes
• Hooks implemented by modules on BEHALF of a theme

11.3

• Hooks in themes including preprocess and alter hooks

Warning

Backwards compatibility for maintaining older versions is more complex, review the change record above.

Exceptions

• hook_install()
• hook_install_tasks()
• hook_install_tasks_alter()
• hook_post_update_NAME()
• hook_removed_post_updates()
• hook_schema()
• hook_uninstall()
• hook_update_dependencies()
• hook_update_last_removed()
• hook_update_N()
• Hooks implemented by modules on BEHALF of a theme are no longer supported