HarperCollins Voyager have responded to the explosion in popularity of A Song of Ice and Fire by reissuing the series in several new formats. New B-class paperback editions of the books are on British bookshelves right now, but more interesting is the news that Voyager are preparing new, high-quality hardcover editions of the novels.
These editions - which are basically much harder-wearing and 'nicer' versions of the original hardcovers rather than 'proper' limited editions like those from SubPress - come with their own slipcases and a simple heraldic device on the cover of each book. A Game of Thrones has the Stark direwolf on the cover, whilst A Clash of Kings features the Baratheon stag, A Storm of Swords is graced by the Lannister lion, A Feast for Crows features the Greyjoy kraken and A Dance with Dragons sports the Targaryen dragon.
These new editions are priced at £40 each and are being rolled out over the next few weeks: A Game of Thrones is already available and will be followed by Kings (on 29 September), Swords (1 November), Crows (8 December) and Dragons (15 March 2012). Notably, the new edition restores A Storm of Swords as a one-volume book (the only British print edition available for the past decade was in two volumes).
UPDATE: Early reactions from people who have bought the new Game of Thrones are not good. These new editions are still glue-bound, rather than sewn, which is insane for an expensive hardcover edition like this (so throw out the 'harder-wearing' comment from above). It also appears that Voyager are continuing their grand tradition of not using the maps correctly. Thrones now has the map of Slaver's Bay from A Storm of Swords included, but not the Free Cities map from A Dance with Dragons, despite Slaver's Bay not appearing in the book at all but several of the Free Cities playing a role. In short, I would hesitate about getting these, certainly at the £40 cover price.