John Picacio is a big name when it comes to artists working in the field of fantasy and science fiction, having done many covers and illustrations. When it was announced that he would the calendar after the already excellent work from Ted Nasmith last year, mich rejoicing could be seen.
I received the calendar and I must say I am well pleased with it. Beautiful work all around. My particular favorites were a very striking Tyrion ( probably the best Tyrion I have seen yet), Melisandre, The Mountain vs Red Viper, Ned at the Godswood ( also the cover you see), and Bran reaching out to the 3-eyed crow. I guess the only one that feels a bit off to me is the one that shows The Others. It's still much better than the strange depiction of The Others in the tv series, but it's also still different from described, they should still be more angular and a bit less humanoid, with ice skin that serves as armour.
So yes, very good, and highly recommended.