On the 28th February 2012 Microsoft will make Update Rollup 2 (build 4.0.3606.2) of Forefront Identity Manager (FIM) 2010 available for download.  The official documentation for this build can be found on the Microsoft support website under KB article kb2635086.

It should be noted that this build will be available on Windows Update and the packages will be marked as IMPORTANT.  Should you be configured to automatically install these updates you might notice that they will fail.  This is because the FIM Service needs to be stopped in order to apply the update.  You can stop the service and then apply the update or download the update and apply it outside of Windows update.

Update 2 requires FIM 2010 RTM or higher, i.e. you can apply this update to a new RTM build without first applying additional builds.

Points of note.

• Update 2 contains the new ECMA framework –ECMA2 a.k.a. EZMA.  MAs are now called Connectors too.
• The Synchronization Service now supports rules extensions compiled in .NET 4.
• Update 2 reverts to the previous handling of SQL special characters such as an underscore and a percent sign broken by 4.0.3594.2.