The latest news - and it seems more like news than rumor - comes via Microsoft product manager Petr Bobek. Speaking at a press event in the Czech Republic on Wednesday, Bobek told the Czech website IHNED that native apps will be available to the public starting in March 2013.
A press release from Microsoft's Czech Republic team confirms the upcoming availability of Office for iOS and Android. As seen by The Verge, it says "In addition to Windows, Office will be also available on other operating systems, Windows Phone, Windows RT, Mac OS, Android, iOS and Symbian."
In addition, the press release notes that there will also be an updated version of Office Web Apps.
However, a U.S. spokesperson for Microsoft said that the company has not yet announced retail availability for the new version of Office, adding that "We have nothing to announce today about retail availability of the new Office. As we shared previously, Office Mobile will work across Windows Phones, Android phones and iOS, and we have nothing additional to announce."
In other words, "Our Czech Republic team jumped the gun. Of course, we're working on versions for iOS and Android (but also Windows Phone). We'll get back to you."
Update: Frank Shaw, lead of corporations communications for Microsoft, tweeted the following: The information shared by our Czech Republic subsidiary is not accurate. We have nothing further to share."
In other words, see what we posted just above the update.