We have dug up new confirmed information in regards to Gainax's appearance. Tony, a FanimeCon Forum Administrator and MusicFest Head, said,
"Ok, I'm told we have some really interesting guests coming from GAINAX, and a lot of them, but they themselves have requested not to publicize the details. They should be in the program guide. In any case, we're planning a lot of events with them, so there will be ample opportunity to get your GAINAX fix..."