Came from Jonathon Liedtke - rest of the story here.
for the other emails see here.
Edit #1: From Jonathon Liedtke
"BREAKING: @Xbox media relations confirms to me via email that #kinect sensor IS NOT required for #XboxOne. #privacy #drm #prism #microsoft"
".@Xbox confirms NO #XboxOne price drop due to NO kinect requirement. #XboxOne is "competitively priced" & xbox is "confident with the value."
for the other emails see here.
Edit #1: From Jonathon Liedtke