The Ionic team released Beta 15 of Ionic 4, featuring significant updates such as the stabilization of the CSS Variables, which serve as a customizable design foundation for Ionic components. Enhancements were made to align with the latest Material Design guidelines, providing a more native-like experience across platforms. The Tabs component underwent a major overhaul, offering greater flexibility and customization by allowing developers to explicitly define tab behaviors without relying on implicit framework logic. This redesign includes the introduction of new elements like ion-tab-bar and ion-tab-button, enabling developers to create more advanced tab layouts. Additionally, the team developed a Screenshot Testing Tool using Puppeteer with Stencil to improve the reliability of UI changes by automatically comparing test screenshots before merging pull requests, ensuring robust quality control throughout the development process. As the beta progresses, the Ionic team is focused on refining the framework towards the final release.