Microsoft affirmed today that Windows running on power-efficient chips from ARM will yield smaller, lighter devices. Not unlike Intel's goal for ultrabooks.
As of today, Windows on ARM is officially called Windows RT, or Windows Runtime -- which essentially refers to the Metro part of Windows 8.
Main points of today's Microsoft Windows RT announcement:Pre-installed only: "This single edition will only be available pre-installed on PCs and tablets powered by ARM processors and will help enable new thin and lightweight form factors with impressive battery life." Touch-optimized Office: "Windows RT will include touch-optimized desktop … Read more