Patent filed by Microsoft

A recent patent filed by Microsoft with the United States Patent and
Trademark Office documents what the software giant calls "Extensible
Filtered Lists for Mobile Device User Interface," outlining details for
improving the consumer data experience by arranging access to multiple applications through a group or listing of items.

Each group or list includes multiple items associated with data or tasks from multiple applications. The groupings will be customizable and extensible

In essence, item groups offer users a filtered view of content available through the mobile device improving access to all available data and tools.