UPDATE 11/11: Sue Rostoni says that Del Rey is dropping the plan to print the Fate of the Jedi paperbacks as premiums. They will be the regular mass market.
Someone asked a question about the higher price ($9.99) listed for the first Fate of the Jedi paperback reprint over at StarWars.com, and today we get an answer from Sue Rostoni:
They’re making the books a little larger and calling them “premium” paperbacks — they’re 3/4″ taller and a touch wider. Seems to be the trend in paperbacks now. I don’t know yet whether this change is for all our paperbacks, or just the FotJ ones…
The format has been around for a while, but I can’t recall seeing it on any SF/F before…
UPDATE: See the comments for pictures of a premium format paperback with a trade and mass market.