For those wondering about Microsoft exec Stephen Elop's, let me be unequivocal. It is.
How do I know? Microsoft. The software maker is planning over the coming months to of Word, Excel, PowerPoint, and OneNote. Those programs will run not only in Internet Explorer, but also in Safari and Firefox. And, lest there be any ambiguity, Microsoft has already that this means Office for iPhone and Office for Linux.
Don't get me wrong. Those are both big deals--particularly Office for Linux (think Netbooks and other Web appliances). It's just that they weren't new revelations, as some thought, on Wednesday.
For those who want to hear about Office for the iPhone straight from Microsoft's mouth, here's a video interview I did earlier this year with Office development chief Antoine Leblond.