Botcon also tweeted that they'd be announcing Guests every Thursday which is good.
sounds like they have taken on someones advice cough Griffin cough.

Hopefully this means a guest or two on Thursday and a figure on Friday so maybe 4 -5 weeks before they release the brochure and another week or two after that when they open registration.

I'd suggest Jack angel is pretty healthy, he only recently did Pappa Smurf so he's working pretty steadily.