According to BGR, rumors are flying that, in November, Microsoft will release a version of Microsoft Office that runs on iPad and Android Tablets. The article also speculates that MS Office might be available on iPhone and iPod also.
This could make things interesting. Having Office on the iPad could help people kick the laptop and go truly mobile. It would be nice to grab your iPad instead of your laptop when you are heading to the airport. I know that there are some enterprise solutions (VMWare View, Citrix XenDesktop, etc) that allow you to stream your corporate desktop to your iPad, but Office for iOS would allow the rest of the iPad-toting road warriors to catch up.