Where are the Sendak Board Books, please?

Underappreciated in the 21st century? 

Earlier this year, my store received a table easel advertising forthcoming "first time in board book" editions of the four Nutshell Library books by Maurice Sendak: Alligators All Around, Chicken Soup with Rice, One Was Johnny, and Pierre: a Cautionary Tale.  Ingram's ipage shows the publication date as 7/01/2014 but no copies in stock, none on order.  HarperCollins website and Amazon don't mention the board book edition at all.  I am wondering whether the publication was delayed or cancelled.

I hope it does happen, because I would love to see Chicken Soup reach a wider audience. I admit that board book editions of these titles aren't necessary--the child who can sit through readings of these books is generally above board-book age.  However, with a board book edition available, I picture more shoppers running into it while browsing for baby shower gifts, and I picture more toddlers carrying it in the stroller.  To paraphrase the jacket copy, "Each month is gay, each season nice, when strollers have Chicken Soup with Rice"!