The Goose Girl old cover
The Goose Girl new cover
Enna Burning old cover
Enna Burning new cover
River Secrets old cover
River Secrets new cover
This is what the Shannon Hale website says:
Bloomsbury is repackaging the Bayern books in the US. That means, the original Alison Jay covers will remain on the hardcovers, but the paperbacks get completely new looks.
Before I reveal, let me answer the probing question:
"WHY? Why, why, WHY?!"Well, it's a good thing, really. I know we're all very attached to the original covers. Alison Jay's paintings are just beautiful. But repackaging paperbacks gives them new life. They figure everyone who would pick up the book based on its cover already has, so time to reach a new audience. Bookstores might order in the new books if they'd stopped stocking the old ones. It can revitalize a series.
On the other hand, these two posts of hers convinced me to read her blog.