Yes, I am able to change cover images as well, @Janine_Tabor. I just have to ensure the covers remain consistent, matching with existing ISBNs. I am unable to add new book records if separate editions are being published.
I have encountered, in my wanderings around Riffle, book records that have totally wrong covers due to weird upload errors from the source. I can definitely correct those types issues too.
Thanks for reporting this one.
Edited to add:
I just checked on the publisher's website and the cover has not yet been updated. I will keep my eye on this over the next while to see if they change the cover, or if they add a new edition.