If here, aren't spoilers. It confirms the fact that Rises is eight years after The Dark Knight and Batman effectively did what Bruce Wayne intended for the role to do. And since that time he's hidden behind the rebuilt Wayne Manor rather that continue his nightly patrols, which does betray that the iconic Batcave may be nothing more than a cave these days.
But here's the best part: we don't know. The notes are generally intended to let press know about changes like, "how did Tom Hardy wear that mask all day?" (Answer: magnets) or "how many capes were made for Batman?" (Ten). In fact, most fans don't really care what Catwoman's suit was made out of or who the female BMX rider that did all of Anne Hatheway's stunt driving on the Batpod. Claiming any of these are spoilers to the plot would only apply to someone that didn't have the Internet, TV or any access to visual media since last year.
And if you did manage all of that, how are you on the Internet anyway?
If you do decide to read and get through all 49 pages of what goes into making The Dark Knight Rises and how Gotham is visually split between Chicago, England and New York City you'll have a better idea of how actors and directors are pleasant toward one another. But spolers? None. Will it ruin the movie for you? Nope. Should you read it? If you have a few minutes and a cup of coffee, go for it.
