You know that guy "sources"? BGR does. The tech blog has heard from Sources that Microsoft is working on a tablet-optimized version of the Office suite, which is expected to land in November of this year. According to BGR, their source actually saw the app working on an iPad, and insisted it looked nearly identical to a leaked shot that Microsoft has since disavowed.
To be clear, Microsoft has said that the above image is fake. Of course, while more often than not, companies simply decline to comment on rumors, it's not entirely outside the realm of possibility that Microsoft has denied the authenticity of the image solely to throw the media off the scent.