I don't have much information right now, but I've read some account of people who have gone in the past and it seems like this is a hands-on, insider tour of their brewery. Hop room, brewing system, bottling line, grounds, barrels, you name it, you get to see and taste it. I'm going to take a ton of pictures (if they allow) and will post them all.
Oh yeah, you also get to brew a beer!!! I'm not sure how that process works but it seems like you kind of flesh out a recipe over email before going and then you get to brew a small batch of it and have it distributed around the country. I'll post any details about that process as it comes. I'm so excited!