No more twitter updates for news and might not be able to embed them on site.
Seems this quietly went into effect yesterday.
Twitter has started blocking unregistered users
Elon Musk blamed “data pillage” and claims the move is temporary.
www.theverge.com
Twitter now requires an account to view tweets | TechCrunch
If you're not logged into your Twitter account and try to view a tweet, you'll be presented with a sign in screen.
techcrunch.com