"Keyboard support" refers to the functionality or feature that helps and allows a user to interact with a device or software using a physical keyboard instead of a touch screen or mouse. Full definition
The new phones also have a Pixel Launcher, rounded app icons, image keyboard support as well as app shortcuts, features that are expected to make the jump via the update. (nashvillechatterclass.com)
The developers are looking into USB keyboard support as well as a worldwide release. (gonintendo.com)
Of course, the game comes equipped with mouse and keyboard support as well, should you choose to play in a more traditional way. (shortpause.com)