Dawson Casting: Curiously zigzagged. Played straight in the case of Christian Bale for college-aged Bruce, and (ironically) inverted in the case of Katie Holmes as present-time Rachel (the character is supposed to be around 30, but Holmes was still in her early 20's in 2005).
The numerous proposals for a fifth Batman film that were bandied about for the better part of a decade, before Warner Bros. settled on a Continuity Reboot instead. See this page for more information.
The Wachowskis were given the choice of directing this movie or their sequels to The Matrix.
Word of God: Going by Word of God, comics canon, and the novelization, the Nolanverse Bruce Wayne was born on February 19, 1977 (1980 in the novelization); his parents were killed on June 26, 1988; their killer is killed and Bruce himself begins his seven-year odyssey on February 20, 2000; Henri Ducard discovered Bruce in early 2006; his training with the League of Shadows went on for about a year, culminating in the final test on January 17, 2007; Bruce boards a plane back to Gotham on January 21, 2007, arriving the next day; the film's story picks up on February 1, 2007, as Crane recommends that Victor Zsasz be moved to Arkham; the Batman makes his first appearance and serves up Carmine Falcone on Valentine's Day, with the case against Falcone going forward the next day; Falcone is driven insane on the 17th, and the Batman is poisoned by Crane that night; the climax takes place on February 19, 2007; Lucius Fox becomes the CEO of Wayne Enterprises the next day... and the final scene takes place on December 1, 2007.