Suzanne Collins recently released The Ballad of Songbirds and Snakes rather abruptly, without much advertising or announcement, during the middle of the COVID-19 pandemic (May 19, 2020). I follow the series fairly closely, and I didn't realize that it had been released until nearly a month later. I was not able to find it on the June 21 or May 31 editions of the New York Times bestseller list, and I do not recall seeing it before (unless I missed something). (Admittedly, though, it stands at #10 on Amazon.com as of 6/24/2020).
Am I mistaken, or has the publisher done very little advertising of this and offer no advanced notice of its publication? If so, why did they do this?