All versions following 15.25 will be 64-bit only. Users that require a 32-bit version for compatibility reasons will be able to download the 15.25 version as a manual, one-time update from the Microsoft Office website. With version 15.25, Office for Mac transitioned from 32-bit to 64-bit by default. Outlook 2016 for Mac has very limited support for synchronization of collaboration services outside basic email. In Outlook, there is a Propose New Time feature, the ability to see calendars side by side, and a weather forecast in the calendar view. In PowerPoint, there are theme variants, which provide different color schemes for a theme. In Excel, there is a Recommended Charts feature, and PivotTable Slicers. In Word, there is a new Design tab, an Insights feature, which is powered by Bing, and real-time co-authoring. Microsoft Office 2016 for Mac has new features in the Mac release include an updated user interface that uses ribbons, full support for Retina Display, and new sharing features for Office documents.
