This is a frustrating input. It presents a question ("What's New in the Latest Version 8.3.4z") but provides no information about version 8.3.4z. There's only a version number "3.0" which is clearly not the version in question, and a last updated date. There's nothing to analyze to answer the question. To provide a helpful response, I need details about version 8.3.4z's features or changes.