If we're really lucky, maybe Kevin J. Anderson can come in and keep it going for us.
Here, I found a preview:
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"You thought you were powerful?" the heretofore-unknown villain declared. "Now you will feel true evil. Winter is coming!" he cackled.
"No!" Tyrion shouted. "I am complex and have moral ambiguity!" But then the evil crept over him, and suddenly he was evil. "Winter is coming," he said, now admitting his evilness.
"And winter is this big magical crystal," the heretofore-unknown villain declared.
"But wait!" Arya Stark's new friend Jane shouted, leaping into the room. "Do or do not! There is no try!" She used her incredible magic power and destroyed the crystal.
"Wow," said Arya, "you saved the world, Jane! How can we ever thank you?"
"Oh, I'm sure you'll think of something, in the next eight or ten books where heretofore-unknown villains keep cropping up with doomsday devices," Jane murmured modestly.
"Can you ever forgive me?" Tyrion asked, now no longer evil.
"Forgive or forgive not," Arya said, "there is no try."
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- Kevin J. Anderson, 2004