The latest release of PHP 8.4 brings several significant changes and new functionalities to the language, including Property Hooks, which allow for additional logic to be added to get and set operations of object properties. This feature provides more flexibility and control over property access and manipulation. Additionally, PHP 8.4 introduces virtual and backed properties, default property values, asymmetric visibility, a new class invocation without parentheses syntax, the `#[\Deprecated]` attribute for deprecation notices, improved parsing of non-POST HTTP requests, and four new array functions: `array_find`, `array_all`, `array_any`, and `array_find_key`. These changes aim to simplify code writing, improve maintainability, and enhance the overall developer experience.