Google is updating its Messages app to include a feature that allows users to copy a selected portion of a message by tapping and holding to reveal interactive options for inline text selection. This feature will enable users to highlight specific sections of text and use Android's copy function, while still retaining the option to copy the full text. Additionally, a new 'Mark as read' button will be added for Wear OS, allowing users to mark messages as read directly from the initial notification. This option will only be available when the notification first arrives.