@platform of unions. what are the major changes??

The "Platforms State of the Union" sessions at WWDC 2024 and 2025 introduced several major changes across Apple's platforms. Here are some of the key updates:

Apple Silicon and Metal: There is a continued emphasis on the power and efficiency of Apple Silicon, which provides a strong foundation for software technologies like Metal. This combination is particularly beneficial for gaming, allowing Apple devices to support console-class games with integrated graphics software and scalable hardware architecture.
Design Updates: A significant design update was introduced, described as the broadest ever, featuring a new material called Liquid Glass. This design scales across Apple's apps and platforms, offering a modernized and delightful user experience.
Apple Intelligence: This is a personal intelligence system that brings powerful generative models to Apple's platforms, enhancing capabilities in iOS, iPadOS, and macOS. It includes features like writing tools and Genmoji for new ways of communication.
RealityKit and Reality Composer Pro: These tools have been updated to simplify the development of 3D and spatial experiences, now aligned across macOS, iOS, and iPadOS.
Swift and SwiftUI Enhancements: There are updates to Swift and SwiftUI, including new APIs and improvements for better interoperability with UIKit and AppKit. This includes gesture recognition and animation capabilities.
New APIs and Features: Across iOS, iPadOS, and macOS, new APIs have been introduced to enhance customization and user engagement, such as the new controls API for creating customizable controls.

For more detailed information, you can refer to the Platforms State of the Union session from WWDC 2024.