Just got an email from Anne of Murder By the Book:
"I just wanted to let you know that we are doing something special as part of the Changes signing at Murder By the Book in Houston on April 6th. We will be doing a trivia contest, with two questions from each of the Dresden File books (not including Changes since it will just be released that day). The highest scorers and/or the people with the first two correct forms will win a LARP-ing sword, as if Harry was making them the guardian of one of the Swords of the Cross."
Sounds fun! Read up, folks!