Okay, I don't know the exact status on this whole thing, but I can say this, anyone from GenCon saying that the Brickyard was moved and thus the conflict would appear wrong. As I understand it, the Brickyard is ALWAYS the first weekend of August.
If it is held at the later August date suggested I know tons of people, including myself, who will not go. Anyone with young children attending school is most likely going to stay home. Hard core gamers from this message board are not likely to be a good indication, frankly, neither are the people that answered the online poll.
I used to live about 2 hours from Indy. GenCon for us this year was a "family" vacation to visit friends as well as for me to attend the Con, sign books, play games, drink, etc. Like most parents, my kids come first. I want to know who their teachers are, what their teachers are like, etc. at the beginning of school.
I don' t know about everyone else, but I'll be emailing Peter Adkinson to ask for a July date. This year's worked out fine for me.
That's just one opinion ...