Batwoman/Trivia

Executive Meddling: Apparently, JH Williams III did not want to do Batwoman #0, but was told he had to in order to increase the reader base.
Gay Panic: Based predominantly on subtext, many rumors circulated in the 1950's that Batman's relationship with Robin was sexual instead of parental. One of the original reasons for Batwoman's creation (according to some) was to provide a female love-interest for Bruce Wayne in order to appease the Moral Guardians.
Schedule Slip: The first issue of Batwoman's new series was originally supposed to be released in February 2011. It was pushed back to April, and then to September as part of DC's company-wide relaunch.
Unintentional Period Piece: Young women named Katherine very rarely call themselves Kathy nowadays. Kate is more likely.
What Could Have Been: Batwoman was initially touted as one of the main characters in James Robinson's Justice League spin-off book Cry for Justice, and was heavily featured in promotional material for the book and even got a spot on the first cover. When the book was shortened and turned into a mini-series thanks to a decision from the higher-ups, Batwoman's appearances in the title were regulated to scattered cameos and a brief supporting role in the fifth issue. The writer later apologized for performing an unintentional bait-and-switch on fans of the character.