I did something similar when the seventh (and last) Harry Potter novel came out. I was *convinced* it was releasing on July 7 (i.e 7/7/07).
Then when speaking to one of my friends a few days prior and asking if he was looking forward to it, he mocked me as it turned out it wasn't releasing until July 21st.
They missed a golden opportunity there. It's freaking Harry Potter, nothing can compete with it. The least they could have done is release it on July 31st.
@canonj I tried to join you from the friends list but then it connected me to a room with all random people, and then it disconnected before the first race.