The latest is the Solution Center page for Windows Home Server 2011 in the Microsoft Support web site.
It says at the top: “Windows Home Server 2011” and “The solution center applies to current versions of Windows Home Server” (i.e. Windows Home Server 2011). According to the page, it was last reviewed by Microsoft, presumably for correctness, on June 22nd, 2011.
Yet, if you click the link for the Windows Home Server product guide, what you will get is the Product Guide that was issued for version 1 of Windows Home Server in January 2009. So, not for Windows Home Server 2011, then.
And under the Learning More section, the penultimate link should really read “Monitor the health…” not “Monitors the health…” Yes, it’s a little thing, but it seems to me to be indicative of a continuing lack of attention to quality of product.