Update on the big party planned in Chicago
Their website is up, and it has this as an opening write-up:
So what's this all about?In a nutshell: HPANA and Wizarding World Press, MuggleNet have joined forces to put on the "Superbowl" of parties celebrating the release of Harry Potter and the Half-Blood Prince, the sixth installment in JK Rowling's best-selling series.

It sounds to be spectacular, and hope you can attend should you be anywhere around this area. ;)
The site is HERE.