In an effort to prove to people that he's actually writing and not just screwing off and commenting on sports blogs, George R.R. Martin released a single paragraph from his upcoming Winds of Winter, which will be the sixth book in the "Song of Ice and Fire series (known to people who watch HBO as Game of Thrones.) It's all about Tyrion and appears to pick up where we last left Tyrion in Dance with Dragons. 

Here's the excerpt, courtesy of Entertainment Weekly

"Somewhere off in the far distance, a dying man was screaming for his mother. 'To horse!' a man was yelling in Ghiscari, in the next camp to the north of the Second Sons. 'To horse! To horse!' High and shrill, his voice carried a long way in the morning air, far beyond his own encampment. Tyrion knew just enough Ghiscari to understand the words, but the fear in his voice would have been plain in any tongue. I know how he feels."