From the arena net blog:
"* Tuesday: Lead Systems Designer and all-around-great guy Isaiah Cartwright Esquire the Third will talk about the revamped attributes system in an in-depth blog post.
* Wednesday: Game Designer Andrew McLeod will give you some insight into Guild Wars 2’s crafting and gathering systems.
* Friday: The thief page goes live on GuildWars2.com, complete with skill videos and all the usual bells and whistles you expect from a profession reveal.
* Friday: We’ll send you an update from the floor of PAX East!"
I'm looking forward to the new stat system reveal, and I'm sure that crafting will hold a few people's interest.