Just Recently Brandon Sanderson has announced that he is twenty-five percent completed with the rough draft of Robert Jordan's "A memory of Light." If you remember, Brandon had set a goal of 400,000 words so this now means that he has penned at least 100,000 words already. using the formula of 350 to 500 words per page, we can estimate that Brandon has completed at least 200 to 286 pages thus far.
Earlier, Brandon announced that he was most excited that he had just completed a major Plot arc but for some reason... he just won't tell us what that plot arc might have been.