An attempt by Twitter to create an unbiased ‘fact-checking’ system that includes people of differing viewpoints.
Unlike the old COVID/other ‘Misinformation’ notifications under the old leadership, people can provide feedback about whether or not a ‘Community Note’ is helpful or not.
The original tweet in question will NOT be hidden/deleted by Twitter with Community Notes, either.
Actually fact-checks major media outlets and other prominent figures that previous leadership simply ignored; something that irritates the ‘Old Blue Checks’.
Along with fact-checking, Community Notes may also provide additional context to a tweet, image, meme, etc, that gains somewhat sizable attention.