is there any cool new shit that will let me make apps that weren't previously possible?

Apple's WWDC has introduced several new features and technologies that could enable the creation of apps that were not previously possible. Here are some highlights:

1. VisionOS and Spatial Computing: VisionOS has opened up new possibilities for spatial computing, allowing developers to create immersive 3D experiences. With new volumetric APIs and advanced sharing capabilities, developers can build apps that offer groundbreaking spatial experiences (Platforms State of the Union).

2. RealityKit and Reality Composer Pro: These tools have been expanded to support macOS, iOS, and iPadOS, allowing developers to create compelling 3D and spatial experiences across multiple platforms. This includes new APIs for rich materials, virtual lighting, and character animation capabilities (Platforms State of the Union).

3. SwiftUI Enhancements: SwiftUI has received updates that include new web APIs, rich text editing capabilities, and support for 3D charts. These enhancements make it easier to build complex and interactive apps (Platforms State of the Union).

4. Generative Intelligence and Swift Assist: Apple has introduced generative intelligence tools and Swift Assist, which can help developers experiment with new APIs and frameworks more efficiently, potentially leading to innovative app ideas (Platforms State of the Union).

These advancements provide developers with powerful new tools and capabilities to create apps that leverage the latest in spatial computing, 3D rendering, and AI-driven development.