ARS Technica reports a LinkedIn profile of Robert Morgan, Senior Research & Development at Microsoft, suggests Windows 8 may introduce some form of 128-bit support:
A LinkedIn profile, which has already been taken down, for a Robert Morgan, Senior Research & Development at Microsoft, has shone a sliver of light on the possibility of 128-bit support coming to Windows 8. Morgan has been with the software giant since January 2002, but we're more intrigued with what his profile (first paragraph) and his status (second paragraph) recently stated:
Working in high security department for research and development involving strategic planning for medium and longterm projects. Research & Development projects including 128bit architecture compatibility with the Windows 8 kernel and Windows 9 project plan. Forming relationships with major partners: Intel, AMD, HP, and IBM.
Robert Morgan is working to get IA-128 working backwards with full binary compatibility on the existing IA-64 instructions in the hardware simulation to work for Windows 8 and definitely Windows 9.