The U.S. tech website is reporting sources with knowledge of Microsoft's plans saying the new app, to be dubbed Microsoft Mobile, is planned for early 2013.
While the app would let Microsoft account users view Word, PowerPoint, and Excel files on their mobile devices, editing documents would require a subscription to the full Office 365 desktop version.
Microsoft, while confirming the existence of Office Mobile, has made no announcement of a launch date or any other details, The Verge said.
"Office will work across Windows Phone, iOS and Android phones," a spokesperson told CNET Wednesday, but did not offer any additional information.
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