Windows 8 to have Reduced Boot Times

Windows 8 will already have Logging in Faster with Face Recognition, Windows 7 already improved a little with bootup times compared to XP, but Microsoft will try to go even further with shredding bootup times.

A few quotes from the leaked microsoft presentation:

"Leverages Hibernation technology to cache most of the core system"
"POST time on many systems is longer than all windows startup"
"Instant sleep resume performance for mobile PCs"
"Logoff+Hibernate"
"How will the other Off states be exposed and rationalized to user?"

Source: Microsoft Kitchen