Android 17 Beta 2 introduces a new windowing mode that expands the concept of "bubbles" beyond messaging apps to include floating windows for non-messaging applications. This feature allows users to interact with multiple applications simultaneously. The term "bubbles" now refers to both the traditional messaging mode and the new floating windows, which can be resized and moved, similar to multitasking features from other manufacturers. Any Android device can utilize these floating app bubbles, but foldables and tablets will have a shortcut for launching windowed apps from the taskbar. Developers are advised to follow existing multi-window mode guidelines for compatibility with the new feature.