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.
Office 2011 (launched in 2010) is still the most recent version for Mac users, but that could be about to change.
Google Sheets gets its long-awaited update to allow offline editing, along with a number of performance tweaks.