WWDC 2024 – Day 3 Updates For Developers – What’s new in Swift

WWDC 2024 – Day 3 Updates For Developers – What’s new in Swift

The anticipation for WWDC 2024 has been at an all-time high, and Day 3 did not disappoint, especially for developers. Apple introduced groundbreaking updates to Swift, marking its 10th anniversary, alongside enhancements to developer tools and frameworks. This blog post dives into the key highlights, focusing on what’s new in Swift and the significant upgrades to developer tools.

Swift, Apple’s powerful and intuitive programming language, has reached a remarkable milestone—its 10th anniversary. Since its launch in 2014, Swift has continually evolved, becoming a staple for developers worldwide.

source : Apple

Swift 6 Debuts

The introduction of Swift 6 has set the stage for improved portability, performance, and an overall better developer experience. Major enhancements include the new Swift 6 language mode, which provides data-race safety guarantees, ensuring developers can write correct concurrent programs.

Expanded Linux Support

Expanding its horizon, Swift now supports additional Linux platforms, including Fedora and Debian. This expansion is a testament to Swift’s growing versatility and commitment to supporting diverse development environments.

New Swift Testing Framework

The new Swift Testing framework is designed to be approachable, expressive, flexible, and scalable. Leveraging modern Swift features like macros and seamless concurrency integration, it aims to become the ecosystem’s default testing solution. Developed as an open-source project, it ensures cross-platform compatibility and easy integration into multiple IDEs.

Source: Apple

Why Swift 6 is a Game-Changer

Swift 6 brings a host of features designed to enhance the developer experience, making coding more efficient and enjoyable.

Improved Portability and Performance

Swift 6 focuses on improving portability and performance, crucial for developers working on cross-platform projects. These enhancements ensure that your code runs smoothly across different environments.

Data-Race Safety Guarantees

With the new Swift 6 language mode, developers can write concurrent programs with confidence. The data-race safety guarantees help prevent common concurrency issues, making your code more reliable and robust.

Language Mode Features

The new language mode in Swift 6 includes several features designed to streamline development. These features not only improve code quality but also make it easier for developers to adopt best practices in their projects.

The Evolution of Swift Testing

The Swift Testing framework is set to become the go-to solution for testing in the Swift ecosystem.

Modern Features

Leveraging modern Swift features such as macros, the Swift Testing framework provides a powerful and flexible testing environment. These features allow developers to write expressive and efficient test cases.

Seamless Integration

Designed for seamless integration, the Swift Testing framework works well with concurrency, ensuring that tests run smoothly even in complex, concurrent environments. Its cross-platform nature makes it a versatile tool for developers working in diverse settings.

Open Source Development

Being developed as an open-source project, the Swift Testing framework invites contributions from the community, ensuring that it evolves to meet the needs of developers worldwide. This collaborative approach fosters innovation and continuous improvement.


Developer Tools Enhancements

Apple’s suite of developer tools received significant upgrades, making it easier for developers to create and optimize apps.


AdAttributionKit is a new iOS framework that helps brands attribute ad impressions to conversion events such as app installs or re-engagement. This tool distinguishes between different types of ads—custom clickable creatives, view-through ads like videos, and in-app banner ads. It also differentiates between viewing an ad and tapping on it, providing precise attribution data.

New TipKit Updates

TipKit has been updated to allow brands to display tips more effectively within apps. The latest update enables grouping tips to help customers discover features in the right order. Brands can limit the display frequency of tip groups to avoid overwhelming users, and show tips to specific customer groups based on their activities or interests.

Deploying Semantic Search

Semantic search is revolutionizing how consumers discover products within apps. Powered by Apple Intelligence, Spotlight search now understands natural language queries, making it easier for users to find what they’re looking for without needing exact search terms.

Enhancing Developer Tools with AdAttributionKit

AdAttributionKit is a powerful addition to Apple’s suite of developer tools, offering detailed insights into ad performance.

Attributing Ad Impressions

AdAttributionKit helps brands determine the effectiveness of their ads by attributing impressions to conversion events. This capability is crucial for optimizing ad strategies and improving ROI.

Supporting Multiple Ad Types

The framework supports various ad types, including custom clickable creatives, view-through ads, and in-app banner ads. This versatility allows brands to leverage different ad formats to reach their target audience effectively.

Detailed Attribution Data

By distinguishing between ad views and taps, AdAttributionKit provides detailed attribution data, helping brands understand user interactions with their ads. This insight is invaluable for refining ad campaigns and maximizing their impact.

Streamlining User Experience with TipKit

The latest updates to TipKit enhance its ability to guide users through app features effectively.

Grouping Tips

With the new update, brands can group tips together, helping users discover features in a logical sequence. This approach enhances the user experience by providing a structured introduction to app functionalities.

Display Frequency Limits

To prevent overwhelming users, brands can now set display frequency limits for tip groups. This feature ensures that users receive helpful tips without being bombarded by too much information at once.

Targeted Tip Groups

Tip groups can be shown to specific customer segments based on their activities or interests. This targeted approach makes tips more relevant and useful, enhancing user engagement and satisfaction.

The Power of Semantic Search

Semantic search is transforming how users interact with technology, making it easier to find what they need.

Understanding Natural Language

Unlike traditional search methods that require exact term matches, semantic search understands natural language queries. This capability allows users to search more intuitively, improving their overall experience.

Enhanced Discoverability

By leveraging semantic search, apps can offer enhanced discoverability, helping users find products and content more easily. This improvement is particularly beneficial for e-commerce apps, where finding the right product quickly is crucial.

AI-Powered Search

Powered by Apple Intelligence, semantic search uses advanced AI algorithms to deliver accurate and relevant results. This technology ensures that users receive the information they need, even if their queries are not perfectly phrased.


The updates announced on Day 3 of WWDC 2024 demonstrate Apple’s commitment to empowering developers with advanced tools and technologies.


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