what developer will absolutly have to do this year ?

This year, developers will need to focus on several key areas based on the announcements from Apple's WWDC:

1. Apple Intelligence: Developers should integrate the new Apple Intelligence features into their apps. This includes leveraging powerful generative models for understanding and generating language and images, which are deeply integrated into iOS, iPadOS, and macOS. Privacy is a core component of these features, so developers will need to ensure their apps respect user privacy while utilizing these capabilities. For more details, you can refer to the Platforms State of the Union.

2. Game Development: With the introduction of Gameporting Toolkit 2, developers can bring high-end games to Apple platforms more efficiently. This includes using unified Metal shaders and the new game mode on iOS to enhance gaming experiences. Developers should explore these tools to optimize their games for Apple devices. More information can be found in the session Port advanced games to Apple platforms.

3. Swift and SwiftUI: Swift continues to evolve, and this year marks its 10th anniversary. Developers should take advantage of the new customizations and interoperability features in SwiftUI to enhance their app's look and feel. Additionally, the introduction of Swiftassist, a new tool for coding tasks, can help streamline development processes. You can learn more about these updates in the Platforms State of the Union.

4. Xcode Enhancements: Xcode 16 introduces a new code completion engine powered by generative models, which can predict code and provide suggestions based on project symbols. This feature runs locally on your Mac, ensuring privacy and fast results. Developers should explore these new capabilities to improve their coding efficiency. More details are available in the Platforms State of the Union.

These innovations and tools are designed to help developers create more powerful, efficient, and user-friendly applications across Apple's platforms.