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MS is already there and is set to support unreleased device . . .

http://blogs.zdnet.com/microsoft/?p=3990&tag=col1;post-4959

article said:
5. This is a Windows-only thing, right? Actually, Office Web Apps can be accessed from Windows, Macs and Linux systems. The requirement is those machines be running Internet Explorer 7.0 or higher; Firefox 3.5 or higher or Safari 4 for the Mac. No Chrome, no Opera, no Safari for Windows. (At least not for now.)

Rocketman

Sit sown, hold on, shut up.
 
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