1) There's a game in this game. One of the elaborate side-quests in Fable III sucks your hero into a tabletop role-playing game. Shrunken into a new fantasy world your hero gets new, silly perks and upgrades. I earned my hero "+30% self-importance" as I ran around trying to rescue a damsel in distress. As you play "The Game" the Fable characters who invited you into it can be heard talking about the whole affair. They are the game masters, joking about the rules they've created, debating each other's design decisions, declaring at one moment that this is "the worst game ever," and, most ridiculous of all, doing the voice-acting for all of their characters. A Microsoft Fable representative who showed me the game said the quest lasts a good 20 minutes. It is an example of some of the more imaginative excursions available in the game.
2) You can enjoy some of the benefits of marriage without getting married. I'm referring to money, of course. Fable players who don't wish to marry other characters in the game can still engage in "business partnerships" that will produce some financial advantages
I was also reminded yesterday of some other fun Fable III details that I had heard before: characters in the Fable III world will remark on the Fable II exploits of gamers who played the previous Fable game; the romance system will be a little more complex than last time, requiring the player to sometimes do something other than flex repeatedly to get someone to fall in love with them; the dog, a hero's best friend, is back.
There are plenty more details to be learned. We'll be learning them together soon. Fable III launches on the Xbox 360 in North America on October 26.