Microsoft today detailed the work it has been doing with PC OEMs for building next generation Windows 8 and Windows RT based devices. Microsoft also announced that we can expect ARM-based PC designs from Dell, Lenovo, and Samsung running Windows RT this year. Also Microsoft said that all of these Windows RT PCs will have consistent fast and fluidtouch interactions, long battery life, connected standby, and are beautiful, thin, and light designs. Microsoft also said that you can expect 8 hours to 13 hours of scenario run time of HD Video Playback on Windows RT machines. Also the new Connected Standby mode allows your Windows RT PCs to stay connected to network in low power mode.
Read more at Windows 8 blog.