Ionic has introduced the Split View feature, which enhances the ability of apps to adapt to different screen sizes by allowing a side-menu to be exposed when the viewport reaches a specific width. This feature, a highly requested addition, involves using the expose-aside-when attribute directive within the ion-side-menu tag, enabling developers to specify when a menu should be visible based on the viewport's width. The default use-case for this attribute uses "large" as a shorthand for a minimum width of 768px, but it also supports custom media queries for greater flexibility, allowing developers to tailor the visibility of side-menus to various device sizes, such as phones and tablets. This enhancement improves the responsiveness and user experience of Ionic apps across diverse devices, reflecting a significant step in accommodating the needs of developers dealing with varying screen dimensions.