With the recent release of Office 2013 and Office 365 for home users rumors are spreading that the 2014 version which is to be released and made available for Mac will also be made available for Linux,Android and iOS devices.
Sure enough,even if is released or made available it will not be for free and normal licensing will apply or maybe less and we will have to wait to see but one thing is for sure those restricted to windows and mac for MS Office will now have better options to switch to Open-Source environment.