Boston is one of the key launch cities for the upcoming Vista, Office 2007, Exchange 2007 launch series. The launch will be held at the Boston Convention Center on January 24th.
Registration is required - Developer or IT Professional | Technology Decision Maker
If you can't attend the Boston launch, there will be a number of regional launch events as well. Northeast events are:
You can find details on these events here.
Keep in mind this is the new Boston Convention & Exhibition Center (if you attended the Visual Studio 2005 launch event - same place) and not the Hynes CC.