You could just look it up but here are the main indicators of New Atheism:

1. Heavily influenced from the work of the Four Horseman.

2. They see religious belief as irrational and dangerous, that must be eliminated from society. https://twitter.com/paulogia0/status/1339077942769459202

3. They love the hard sciences but most of them aren’t philosophically informed. They usually do very basic objections like “God being uncaused is special pleading”

4. They define Atheism as a “Lack of a Belief in God(s)”. Making rocks, babies, and random objects atheists.

Also it’s been rather recently that some Atheists have stopped using the label and want to separate from it. Just four/five years ago many Atheists were proudly using the label.