Django 6.0 introduces several significant features and changes, with support for Python versions 3.12, 3.13, and 3.14. It's important to note that Django 5.2.x is the last version to support Python 3.10 and 3.11. Users upgrading to Django 6.0 need to be aware of the deprecation of certain features and should refer to the upgrade guide for assistance. One of the key additions in this release is built-in support for Content Security Policy (CSP), which helps mitigate content injection attacks like cross-site scripting (XSS). Developers can now enforce CSP rules easily using the `ContentSecurityPolicyMiddleware` and configure policies with settings like `SECURE_CSP`. This makes web applications more secure by specifying trusted sources for various content types. Another major feature is the introduction of a built-in Tasks framework, allowing developers to run background tasks independently from the main request-response cycle. This is useful for operations like sending emails without blocking user requests. Django 6.0 also adopts Python's modern email API, replacing the older legacy API. This change simplifies email handling and supports Unicode better. The `EmailMessage.message()` method now returns instances of the new `EmailMessage` class, ensuring a cleaner codebase. Other enhancements include improvements in the admin interface, such as updated icons and customizable password change forms, as well as increased security for password hashing. The release also adds support for Haitian Creole and various minor features across different modules, enhancing overall functionality and user experience.