This article in the Guardian, Are books getting longer, shows that in both commercial bestseller lists and literary lists (measured by Booker Prize winners), the books that feature are tending to get longer. But this goes against a number of trends which you would expect to be pushing readers in the opposite direction. Read more
Bestsellers

'I have to know where I'm going'
‘When I'm putting together a novel, I leave all the doors and windows open so the characters can come in and just as easily leave. I don't take notes. Once I start writing things down, I feel like I'm nailing the story in place. When I rely on my faulty memory, the pieces are free to move. Read more