Winds of Winter Info:
At the 2011 World Science Fiction Convention in Reno, Nevada, Martin read an Arianne chapter, during which she heads for Griffin's Roost to see the young boy who is calling himself Aegon.[citation needed] Victarion's chapter will begin five minutes after the end of A Dance with Dragons, taking place on the eve of the Iron Islanders' surprise attack on the cities in Slaver's Bay
http://en.wikipedia.org/wiki/The_Winds_of_Winter
Viewpoint characters
George R. R. Martin confirmed the following characters to have POV chapters in The Winds of Winter:
Sansa Stark, one chapter was removed from A Dance with Dragons in June 2010
Arya Stark, one chapter was removed from A Dance with Dragons in June 2010
Arianne Martell, two chapters were removed from A Dance with Dragons in June 2010
Aeron Greyjoy, one chapter was removed from A Dance with Dragons in July 2010
Theon Greyjoy, one sample chapter appeared on Martin's website in December 2011
Victarion Greyjoy, portions of one chapter were first read at TIFF Bell Lightbox in March 2012
Tyrion Lannister, one chapter was read at Eastercon in April 2012