From an overview of Kurt DelBene iPad comments
In fact, he pointed out all the work Microsoft has already done to support the iPad.
- Microsoft is working with Apple to support Office Web apps. Microsoft already lets users access some Office files with a Web browser (they have to be stored on Microsoft's SkyDrive or SharePoint products). DelBene said that Microsoft has "been working with Apple on improvement to the Safari browser so that those Web applications work well on an iPad."