Martin has also revealed there is light on the horizon, though: “I slogged on, and of late I am picking up steam again…
“Of late I have been spending a lot of time with the Lannisters. Cersei and Tyrion in particular. I’ve also paid a visit to Dorne, and dropped in to Oldtown a time or three.
“In addition to turning out new chapters, I’ve been revising some old ones (some very old)… including, yes, some stuff I read at cons ages ago, or even posted online as samples.
“I tweak stuff constantly, and sometimes go beyond tweaking, moving things around, combining chapters, breaking chapters in two, reordering stuff.”