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Google lays off hundreds in Assistant, hardware, engineering teams
(www.reuters.com)
This is a most excellent place for technology news and articles.
Take a look at home assistant to power the speech part of the display. They have done a lot the last year and even have wake words working.
I'm not going to bother with speech on it as I don't really like talking to my devices. How assistant is definitely in consideration for the screen though if I don't get magic mirror working to my liking.