Microsoft opens the Office docs file format
Well, not the current format(s). But they decided to create a new XML-based (what else!) format.
No scoop here, this probably the fastest spreading news in the history of the blogosphere.
I didn't read much about it but I would be surprised if nobody at MS thought that it's nice to have what could eventually become the killer argument for making people upgrade their copy of Office.
[Through Ian Landsman]