What were the top 3 announcements from 2017?

Based on the context provided, here are the top 3 announcements from WWDC 2017:

1. Apple Intelligence: Apple introduced Apple Intelligence, a personal intelligence system that brings powerful generative models to iOS, iPadOS, and macOS. This system enhances the capabilities for understanding and generating language and images, helping users take actions with rich awareness of their personal context. It is deeply integrated into features and apps across the system and built with privacy from the ground up. For more details, you can refer to the Platforms State of the Union.

2. Gameporting Toolkit 2: Apple announced significant updates to the Gameporting Toolkit, which helps developers bring high-end games to Apple platforms more efficiently. This toolkit has been positively received by developers and gaming enthusiasts, enabling the evaluation and porting of demanding Windows games like Cyberpunk 2077 to Mac. The new version, Gameporting Toolkit 2, includes updates based on user feedback to accelerate the development timeline. More information can be found in the Platforms State of the Union.

3. ARKit Enhancements: Apple introduced several new features in ARKit to enhance spatial computing experiences. These include improvements in room tracking, plane detection, object tracking, world tracking, and hand tracking. These advancements help apps better understand and engage with their surroundings, providing more immersive and interactive experiences. For a detailed overview, you can watch the session on Create enhanced spatial computing experiences with ARKit.

Relevant Sessions:

1. Platforms State of the Union
2. Create enhanced spatial computing experiences with ARKit

If you have any more specific questions or need further details, feel free to ask!