OK, here is the synopsis from Gawker, divided into chapters and supplemented with material from the leaked notes (in red). Any additional observations are in green. Needless to say, if you want to avoid spoilers, look away now.
Chapters 1-12: Bond, having destroyed part of Mexico City on a rogue operation,
Chapter 13: and facing forced retirement as MI-6 merges with its sister agency MI-5, (M meets Bond in a cemetery to tell him this)
Chapter 14: escapes across Europe on a mission posthumously assigned to him by his late boss, M (played by Judi Dench).
Chapter 15: He seduces the wife (Monica Bellucci) of a man he assassinated (who he meets at a dance class), and, using information from her, attends a meeting of a sinister group of masked terrorists led by a man who knows Bond from his past. (Mickey Mouse line presumably goes here. Blofeld's cat seems to make an appearance somewhere in this chapter).
Chapter 16: Meanwhile, Bond's current boss, M (Ralph Fiennes), battles his likely successor and the head of MI-5, C (Andrew Scott), over the future of an intelligence sharing program called Nine Eyes (at the bidding of a mysterious "voice on the phone". This parallels the bad guys coming together as SPECTRE, a point that should be laboriously hammered home at every opportunity).
Chapter 17: Bond witnesses the death of Mr. White, a villain from Casino Royale, (who lectures Bond "for the third time in an hour" about how he's going to die a lonely death) and finds White's daughter Madeiline Swann (Lea Seydoux) in Austria.
Chapter 18: The pair head to Morocco, get drunk, screw, have stilted conversations, take a train to the desert,
Chapter 19: and kill a henchman named Mr. Hinx (Dave Bautista).
Chapter 20: Bond meets the villain, a mysterious man named Heinrich Stockmann, who also uses the alias Franz Oberhauser, played by Christoph Waltz.
Chapter 21: In an irritating expository monologue, Stockmann confesses over dinner that he is Bond's older foster-brother and also the head of a terrorist organization named Spectre.
Chapter 22: Bond is tortured;
Chapter 23: and then for unclear reasons manages to bluff Stockmann into rushing back to London, where it has become clear that C has been working for Stockmann the entire time.
Chapter 24: Bond, accompanied by Q, who was in the next cell the whole time, follows Stockmann to London, where he kills him.
It becomes harder to match up the notes to the plot synopsis the further in we get. I assume Tanner's betrayal is revealed towards the end. Now, does anyone have any chapters they particularly want to write?