Lots of digging on LinkedIn turned up some interesting info on Windows 8 (which may or may not pan out). Ars details the findings of Windows 8 News, along with a lengthy write up on all of the current info churning in the Windows 8 rumor mill.
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.