New Office Insider build for Mac brings UI improvements on the Fast Ring. The latest build, Version 15.38 (170822), brings a range of improvements and fixes to just one of Office 2016 apps – Outlook app, along with a known issue for a PowerPoint app. The main UI improvements to the mail and meeting invitation headers make the app feel more modern.

New features:

  • Mail Headers: Improved look and functionality for mail and meeting invitation headers (in Reading Pane and separate window) – Details
  • Week Numbers: In Calendar view, week numbers are now displayed in Month view (Grid view) and in the mini-calendar in the Sidebar
  • Improved keyboard navigation support making it easier to navigate the header without a mouse

New fixes:

  • When using spacebar key to press view selection buttons in the Sidebar, keyboard focus now remains on the button pressed
  • When composing a message, duplicate Attach File buttons are no longer displayed in the Ribbon

Know issues:

  • PowerPoint does not save modifications to files on network share on some versions of MacOS High Sierra beta
  • When composing a message, dragging and dropping contacts between To, Cc, and Bcc fields requires selecting, clicking, and holding before dragging
  • MacOS High Sierra: If you have the Cisco WebEx plugin installed, Outlook might crash