The Lands of Ice and Fire is coming. The Amazon page now has the official front cover art (I might have seen that cover in the flesh, and I might be able to vouch that it looks awesome!).

Click image for larger version. 

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If you're considering ordering this, then here's a handy affiliate link

There are 12 maps in the pack detailing Westeros and the lands to the East as well as a couple of detailed city maps. I'm not allowed to say much more than that at the moment!