On the latest Penny Arcade blog, Tycho has laid out some plans to move or copy PAX from Seattle to somewhere on the East coast and, perhaps, across the pond as well!

From the blog: ‘People sometimes call PAX ‘The New E3,’ but that never sat right. It’s
better to say that PAX is everything E3 isn’t. We made it the opposite
on purpose – public instead of private, fun instead of work. It’s about
people who make and play games, instead of the games themselves. This
is all pretty obvious in retrospect, but for some reason no-one else
had done it. It deserves to be on the East Coast. Frankly, it should be
global. I’m working on it.’

Via Penny Arcade