Headline is what the front page of CNN showed pointing to this article.

"Seven of Moscow's largest drone attacks in its war on Ukraine have happened in the past four weeks."

As many as 479 drones a night - but it's not just that drone swarms are larger (and more frequent). The swarms are "more concentrated" and also "executed in a way that makes them a lot more difficult to combat, flown at higher altitudes out of reach of machine guns."