what new sdks / apis were released?

At the recent WWDC, Apple introduced several new SDKs and APIs across various platforms. Here are some of the highlights:

1. RealityKit 4: This update includes APIs for rich materials, virtual lighting, blend shapes, inverse kinematics, and animation timelines, enhancing character animation capabilities. It also provides new APIs for low-level mesh and textures, working with Metal compute shaders for improved control over app appearance (Platforms State of the Union).

2. SwiftUI Updates: New web APIs, rich text editing capabilities, support for 3D charts, and performance improvements were introduced. A new declarative webview component and a Web Page API for programmatically controlling web content were also added (Platforms State of the Union).

3. UIKit Enhancements: New menu APIs, UpdateProperties Method, and Observation tracking were introduced to streamline code and improve performance (What’s new in UIKit).

4. Enterprise APIs for visionOS: Six new APIs were introduced, focusing on enhanced sensor access, platform control, and advanced machine learning capabilities (Introducing enterprise APIs for visionOS).

5. Foundation Models Framework: This framework allows developers to use Apple's models to get responses in plain text or as structured Swift Data, enhancing app intelligence (Keynote).

6. StoreKit Enhancements: New subscription offer types like Winback offers were introduced, along with tools for customizing eligibility rules and merchandising offers (What’s new in StoreKit and In-App Purchase).

These updates provide developers with powerful tools to create more immersive, efficient, and integrated applications across Apple's ecosystem.