In a wonderfully consistent best practice the Microsoft Dynamics CRM Development team has released their latest rollup for Microsoft Dynamics CRM v4.0. Nice Job Guys!
R11 has a number of updates and enhancements for Enterprise including items focused on performance improvement when dealing with tens of thousands of workflows and fine tuning around active directory user settings.
The Microsoft team has also managed NOT to neglect the help files (something easy to do when developing at the speed of light). The documentation team has continued to update the electronic help files that come with the system. A new release of help is included in this rollup and it is recommended that this also be installed.