The news is out and Microsoft is killing Windows SBS Standard and Premium as well as Home Server. The only server offering remaining in this area is Windows Server 2012 Essentials which is a replacement for Windows Small Business Server 2011 Essentials. The change will leave a giant hole for either small businesses that want the mail server on site or small businesses over or approaching the 25 user limit built into the Essentials product.
For more details from the Home Server front check out http://www.wegotserved.com/2012/07/05/microsoft-draws-windows-home-server-era-close/ .
From the SBS side check out http://www.winsupersite.com/blog/supersite-blog-39/windows-server/windows-server-2012-skus-revealed-143615
We use Windows Small Business Server 2011 Essentials for most of our clients anyway, but I am concerned that Microsoft is trying to force their Office365 on the small busineses, whether it is the right product or not. There are other cloud based exchange servers and other onsite Exchange compatible mail services out there like Kerio.