There's a brand new website for Microsoft focusing on Enterprise customers - http://www.microsoft.com/en-gb/enterprise/

Links up there right now include the 2011 MS Enterprise resource guide,  a really comprehensive guide to the big ticket stuff we've worked on this year, an interesting research portal, and Forrester reports on how modern Productivity tools can free up two weeks per worker per year.

This is going to be worth keeping an eye on.