The preview includes all elements of the popular productivity suite.
With Office for iPad already out, Microsoft may want to continue capitalizing on its competitors before turning to its flock.
Office for iPad launched in March, and the latest update adds printer support and new features for PowerPoint and Excel.
Microsoft's single user Office 365 subscription plan is now live in the UK and it's the cheapest option yet.
Office 2011 (launched in 2010) is still the most recent version for Mac users, but that could be about to change.