Hero Games and IPR will be at GenCon, regardless of how some folks are interpreting the GenCon map (which didn’t differentiate the innards of the GPA booth block). IPR will be representing Evil Hat’s products at GenCon. (IPR will also be how you’ll find Evil Hat’s stuff at Origins, which I’ll be at next week!)
As to the details of GenCon, I’ll go ahead and quote Darren Watts:
Hey guys! Both Hero Games and IPR will be part of the Game Publishers Association block (booths 412-413). The list currently published doesn’t seem to have any of the GPA members listed separately on it yet- hopefully that’ll get fixed shortly. Evil Hat won’t have its own booth, but will be prominently featured in the IPR one, especially with Do: The Flying Temple making its con debut there (and Star Hero in Hero’s, plug plug!)
And in general, if you’re not sure about something involving Evil Hat in the future, please come right to the source and ask. I’m not hard to find!