Our Visual Studio Ecosystem team will be putting on a conference on September 15th and 16th. It'll be a two day conference for anyone interested in learning more about extending Visual Studio. If you're interested, the preliminary sessions have been posted at: http://msdn.microsoft.com/en-us/cc676517.aspx
For more info on the conference, check out: http://msdn.microsoft.com/en-us/vsx/cc512752.aspx
Hope to see you there.