The rumoured Nest Smart Display will have a removable screen that can be used as a tablet. It attaches to the base/speaker for a more conventional-looking smart home device.
This new form factor comes as Google has spent the last few months adding more interface elements to the 2nd-gen Nest Hub and Nest Hub Max.
Swiping up from the bottom of the screen reveals a row of "apps" above the settings bar. You can open a fullscreen grid of icons from there. Applications and games on the Nest Hub are essentially web views, so this is technically a launcher for shortcuts.