If I were going to GenCon this year, I would be knocking nerds out of my way left and right as I sprinted toward Privateer Press' booth to get Superiority, the new WarMachine book.
We will have the Player's Guide to the Savage Tide Adventure path at the show, as well as the first expansion for the Game Mastery Item Cards, even if I have to drive to the printer in Kentucky myself to pick them up.
Personally, I am very interested to see how long people can hold out the Ptolus book. That thing is very heavy.