There is another being organised by another Ryan - please note the difference in spelling and please note that the 2 are not linked - in other words there are 2 being organised - this one though being THE major one
Are you sure about that? I am led to believe there is only 1 Expo being organised, in Sydney in May.
Ryan's post from AA:
Tony,
Your quick on the draw! lol
I was going to make a post 2 mins ago about this but you beat me too it. Sorry i temp removed and then checked with Rian and then removed his number etc.
I am moving this to the news section and will make it a sticky thread.
Everyone,
Aussie Arcade will be supporting this event and I will be assisting with organising it. 
Matthew
