In a previous post I linked a New York Times piece mentioning a new edition of A Farewell To Arms, which included all of Papa’s additional, but scrubbed, endings. (Perhaps scrubbed out at Hemingway’s standing desk?) Out now, there is a nice piece over at the Millions about the endings, focusing more on the literary ephemera that are now being included with many novels. (I think especially of the paperback of The Lovely Bones we have at home: it seems to include as much extras as it does novel itself. Note that the linked edition there is not the one I’m talking about.)
All in all, I think I can add A Farewell to Arms to my soon-to-be-re-read pile, which already encompasses Moby Dick, Cloud Atlas (see previous post) and (perennially) The Lord of the Rings.