The good news: The Killing Joke looks as good as we hoped it would be. The announcement of new material (mainly pertaining to Barbara Gordon) made a few people twitchy, and the animation has its detractors, but it looks like the sound and overall feel of the film will align with the book.
The bad news: This is going to be ridiculously popular at SDCC, and probably not as easy to get into as most of the nighttime screenings and premieres. This will definitely be an anchor panel/event for me and probably tons of other attendees.
Three months from today, San Diego Comic-Con will already be over. That's kind of unsettling, right?