For all of us not going to TechEd North America, the Keynotes and some of the most popular session can be streamed live here: https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032513308&Culture=en-US

It sounds interesting, System Center 2012 is of course in the live stream description!
Watch the live stream of Microsoft TechEd North America 2012 Keynote Address and some of our most popular sessions, covering a variety of technology topics like Windows Azure, Windows Server 2012, Microsoft System Center 2012, Windows PowerShell and more.

I will be watching the live stream!