PAX East went very well. The vast majority of players seemed to just blaze through the introductory levels, and while I was expecting something like that from previous playtests, having hundreds of people play the game over the course of three days certainly gives enough data to be sure. Even then, I was still making tweaks to the game every day, sometimes on my laptop during the show itself!
Notably, Stephen Totilo of Kotaku came by to capture some new footage and discuss the game. Here's the link to the video.