Apple is exploring a stand-alone device that combines an iPad with a speaker hub. The idea is to offer something that users can place on a kitchen counter, in the living room or on their nightstand. But Apple also has worked on an iPad docking accessory that it could sell separately and would accomplish much of the same thing. Source: Apple Working on Whole New Way to Use iPad at Home - MacRumors
Nearly every day, I use my iPad in the kitchen while preparing food to listen to the news or to YouTube videos. I can imagine the iPad UI to be something like CarPlay UI (or HomeKit UI?) with tiles where I could see a video source, some HomeKit controls, the weather, etc.