A week that began with a flurry of Worldwide Developers Conference announcements from Apple is ending with its once-fiercest rival making a little news of its own. Microsoft on Friday announced a mobile version of its Office productivity suite for the iPhone. The software giant's move answers a longstanding demand for a version of the world's most widely used office software for one of the world's most popular mobile platforms--though there are a couple of big caveats that could limit just how widely this iOS-friendly version of Office gets adopted.Related StoriesWhy did Apple call OS X 10.9 Mavericks?
