Five chapters is no small number. I don't have ready access to an exact figure, but there couldn't have been more than 50 or so chapters in Feast. Assuming 50 in Dance, 5 = about 10% of the book still left to write, and that assumes that GRRM is done with all other revisions.

Not much news here, I think. It says the publisher is "hoping to have a finished manuscript by Christmas," not that it expects to have one. I truly wish it were otherwise.