You may recall that there was a significant controversy (I think technically it was a "kerfuffle") a while back about Dmitri Nabokov's decision to have his father's final, unfinished novel published — in defiance of his father's explicit request that the notes for the book be destroyed.
But here's something interesting: according to the NYT , when Penguin publishes The Original of Laura this November, it will consist of photo reproductions of the 138 index cards on which Nabokov drafted this novel, as he did most of the ones that preceded it, with transcripts on facing pages. A brilliant decision. Can't wait to see it.
(I am reminded — and yes, you knew Vladimir Nabokov, you worked with Vladimir Nabokov, and I am no Vladimir Nabokov — that I wrote all the notes and drafts for my first couple of books in the late, lamented HyperCard. I still miss HyperCard. Nothing has come out since that fits my workflow quite so well.)