Microsoft released the 17th major version of Office today, Office 2016. It is 25 years since Office came from nowhere to dominate against the incomparable Wordperfect 5.1 and Lotus 1-2-3. Office adoption was rapid and near universal, exploding alongside Windows and becoming so strongly associated with Windows that many believed they were part of the same product.
Over those 25 years, each new version of office included major improvements and new features. Each release was a big deal, though on average less so as Office matured. Office 2016 again offers significant improvements over 2013, though with evolutionary improvements rather than a radical overhaul.