This channel release contains the following non-security updates:
Fix an issue where errors appear when trying to save changes to documents synchronized with the OneDrive client.
Fix an issue where changes can't be made anywhere in a worksheet when there is a PivotTable with fields in the Filter area, but no fields anywhere else.
Skype for Business: Non-security updates
This channel release contains the following non-security updates:
Widen the Meeting Join button to fix truncation of some localized languages.
Word: Non-security updates
This channel release contains the following non-security updates:
Fix an issue where shapes within drawing canvas can't be rotated.
Fix an issue where, when typing in Korean, consonants and vowels are incorrectly separated.
Office suite: Non-security updates
This channel release contains the following non-security updates:
Fix an issue where commands are missing from the Ribbon or the Quick Access Toolbar customization dialogs.
Source: Office 365 client update channel releases
See also: July 11, 2017, update for Microsoft Office Office - Windows 10 Forums
How to Check for Updates in Office 2016 for Windows