Interesting article on Microsoft Envision. I didn't go this year. Went to Convergence last year and thought it was great. Envision just didn't seem well articulated to me and, even still, whatever the purpose was, it didn't seem that partner welcoming. Just my two cents.
Not a slam on Microsoft either because they have a ton of great partner-friendly conferences.
http://www.zdnet.com/article/envision-microsoft-again-at-a-crossroads-maybe/