Reporting on Wednesday, The Verge says several sources "close to Microsoft's plans" have told it that the Redmond-based company will release Office versions for Android and iOS in early 2013.
That matches quite well the earlier rumor about March, which came from via Microsoft product manager Petr Bobek, who was speaking at a press event in the Czech Republic in mid-October.
According to the latest report, Office Mobile will debut in the form of free apps that allow Android and iOS users to view Microsoft Office documents while mobile. As you might expect, you'll need a Microsoft account.
Basic viewing functionality will be provided sans a subscription, with Word, PowerPoint, and Excel documents all supported. Edit functionality can be enabled with (tada, monetization) an Office 365 subscription.
The report stated that (again, as you might expect) Office Mobile's iOS version will arrive first. Office Mobile for iOS will arrive in late February or early March, with an Android version not due until May.