I've talked before about the way some books change appearance between announcement and publication. I suspect this happens more and more these days, as internet bookselling tends to demand some sort of image as a placeholder for people pre-ordering the books.
I thought it would be interesting to look at three new or imminent NYRB Classics, and at the covers they were originally promoted with compared with those they qwere finally given. In one case, the title even changed. For each of the three books below, the first cover is the original image and the second is the final, published (and, in the end, more appropriate) version. All NYRBs are designed by Katy Homans.
For the Cossery and Simenons, the now-unused first images are rather intriguing in their own right. However, since they weren't used, I can't find the source information.