From Wayne Ma and Qianer Liu’s report at The Information, quoted by Ryan Christoffel of 9to5Mac:
Apple is also working on a home product featuring a small display, speakers and a robotic swiveling base, designed with a heavy emphasis on AI features. That device could be released as soon as this spring, according to two of the people.
At this point, I am convinced this device will run on App Intents using Interactive Snippets.
View the linked story on 9to5Mac and view the original report on The Information (paywalled).