The new feature in SonarQube 10.1 allows developers to analyze multiple code variants simultaneously, which can include different build configurations such as debug and release builds, cross-platform variants, and support for various architectures like 32-bit and 64-bit. This feature is designed to help developers manage the complexities of modern software development by providing a more expressive and easier way to set up analysis for different code variants. With this new feature, SonarQube can now analyze all possible build configurations and provide aggregated results, making it easier for developers to identify issues that affect multiple variants and prioritize their attention accordingly. The feature also allows filtering of issues by specific variant and provides detailed information on how many variants are impacted by each issue, enabling developers to make informed decisions about their codebase.