Adrenaline Vault has kicked up a Q&A with Yahn Bernier, talking to the senior engineer at Valve about their upcoming team-based action game Team Fortress 2: Brotherhood Of Arms. Yahn explains some of the development changes the game, which now looks to be scheduled for a Spring 2001 release, has gone through, and discusses a few of the new features, such as the in-game user interface VGUI and voice communication.