In an interview, Windows unit President Steven Sinofsky said that the first ARM-based machines running Windows 8 should show up around the same time as the first Windows 8 machines running traditional PC processors from Intel and AMD.
Sinofsky also said that the Windows on ARM machines will come with several Office apps–Word, PowerPoint, Excel and OneNote– that have been tuned to run in a very battery efficient manner. But Sinofsky said that although those applications will run in the traditional Windows desktop, they will be the only programs allowed to do so, other than components of Windows itself.
“There are no other compiled dekstop apps that are available,” Sinofsky told AllThingsD. All of the other apps for Windows on ARM will be the new-style “Metro” apps.