It is not clear for me what database servers exactly are supported. I don't see "SQL server 2008 r2" & "SQL server 2008 r2 SP1" listed as supported.
aren't they supported?
To my knowledge they do work with EPiServer CMS just fine. I'll ask someone about this.
This is a "doc" bug. I will make sure the text is updated. We support SQL 2008 and SQL 2008 R2 as well as SQL 2005 on any service pack level.
Thanks for pointing this out.