I just posted the upcoming Northeastern regional events of interest to developers, but there also are some broader events coming up that you might consider:
5th Annual Microsoft Financial Services Developer ConferenceApril 25-26, 2007Grand Hyatt, New York, NYhttp://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032318224&Culture=en-US Mix '07April 30th - May 2nd, 2007Venetian Hotel, Las Vegas, NVhttp://visitmix.com Microsoft Healthcare & Life Sciences Developer ConferenceMay 21-22, 2007Sheraton Atlantic City Hotel, Atlantic City, NJhttps://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032330657&culture=en-US TechEd 2007June 4-8, 2007Orlando, FLhttp://www.microsoft.com/events/teched2007 PDC '07October 2-5, 2007Los Angeles, CAhttp://msdn.microsoft.com/events/pdc
5th Annual Microsoft Financial Services Developer ConferenceApril 25-26, 2007Grand Hyatt, New York, NYhttp://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032318224&Culture=en-US
Mix '07April 30th - May 2nd, 2007Venetian Hotel, Las Vegas, NVhttp://visitmix.com
Microsoft Healthcare & Life Sciences Developer ConferenceMay 21-22, 2007Sheraton Atlantic City Hotel, Atlantic City, NJhttps://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032330657&culture=en-US
TechEd 2007June 4-8, 2007Orlando, FLhttp://www.microsoft.com/events/teched2007
PDC '07October 2-5, 2007Los Angeles, CAhttp://msdn.microsoft.com/events/pdc
-Chris