Microsoft released its first iOS version of Office on Friday. Officially dubbed Microsoft Office Mobile for Office 365 subscribers, the app is designed only for the iPhone, available only in the U.S., requires an Office 365 subscription (yours or your employer's) and has a very minimal feature set. The release came fast on the heels of Apple's announcement that it will be stepping into the ring with both Microsoft and Google by offering a cloud/web-based version of iWork productivity suite.Related StoriesSteve Jobs paperback biography due out this SeptemberWhy I'll
