Rumours of the Linux version of Office surfaced last weekend at FOSDEM, the open source conference held annually in Brussels. It is all being prompted by Microsoft’s late realisation that Linux may be a viable commercial opportunity after all. Redmond has been developping a version of Office for Android to work on mobile devices. Since Android is Linux-based a lot of the porting work will have already been done. This means that it should not take too much effort to take the next step and bring Office to Linux.
There is no proof of this of course; it is just rumour and speculation. In the past, Microsoft has been worried about letting its crown jewels work on other operating systems. However if it is going to port to Android it might as well go the whole hog.