Guild Wars Community Day Info

Guild Wars Ogaming has published an interview with Pat Wyatt, a Day 1 diary, a Day 2 diary, and a photo gallery from their recent visit to ArenaNet's headquarters. Here's a snip from the interview:
Q: How are instances being implemented into the game? How has the streaming technology allowed you to develop the game?

A: The design model has allowed us to develop the game live. As we implement new information into the game we can instantly see how the game works around this new material. We can then fix any of the problems that may appear. As an example when he worked for Blizzard and they designed the Warcraft II chat interface it had problems. However the developers were able to use them so they didn't have the feedback on the problems the interface caused. Therefore they shipped it with that interface and players had to deal with the problems. With Guild Wars they are able to instantly get feedback from alpha testers as well as from playing the new builds.