Microsoft have also just published the following information regarding Windows Home Server:

Q: Will there be a next version of Windows Home Server?

A: No. Windows Home Server has seen its greatest success in small office/home office (SOHO) environments and among the technology enthusiast community. For this reason, Microsoft is combining the features that were previously only found in Windows Home Server, such as support for DLNA-compliant devices and media streaming, into Windows Server 2012 Essentials and focusing our efforts into making Windows Server 2012 Essentials the ideal first server operating system for both small business and home use-offering an intuitive administration experience, elastic and resilient storage features with Storage Spaces, and robust data protection for the server and client computers.

Q: How long will customers be able to purchase Windows Home Server 2011?

A: Windows Home Server 2011 will remain available as an OEM embedded product until December 31, 2025, and will remain available in all other current channels until December 31, 2013.

This final answer basically means that the actual OEM WHS 2011 software disc will only be available until the end of next year but the likes of the Acer and LaCie WHS 2011 hardware will continue to be available until 2025.

WHS 2011 OEM Embedded to be around until 2025 is a post from: MS Windows Home Server - Your Personal Guide to Microsoft Windows Home Server!