Mikester has make an announcement in this site: http://blogs.technet.com/b/virtualization/archive/2010/07/29/linux-integration-services-v2-1-now-available.aspx
To download:- http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=eee39325-898b-4522-9b4c-f4b5b9b64551
Just download, extract the file and you will get the IC + the documentation which talk about the features and how to configure.
Supported guest OS:-
- SUSE Linux Enterprise Server 10 SP3 x86 and x64 (up to 4 vCPU)
- SUSE Linux Enterprise Server 11 x86 and x64 (up to 4 vCPU)
- Red Hat Enterprise Linux 5.2, 5.3, 5.4, and 5.5 x86 and x64 (Up to 4 vCPU)
To make my life easy, i have added into "Learn more" section (on the right).