http://blogs.technet.com/b/keithmayer/archive/2012/05/04/microsoft-exchange-conference-mec-early-registration-discount-closes-on-may-18th.aspxThe Microsoft Exchange Conference (MEC) 2012 is back after a 10 year hiatus! Don't miss out on this opportunity to learn directly from the engineering team and industry experts with exclusive content on Exchange 15 … Early registration (and theen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)