Office Insider builds are updated on a regular basis to provide new or improved features, security updates and bug fixes. The new Office Insider Build for Mac contains the following new features.
Support basic co-authoring in Word documents that contain macros
Tired of being locked out of your documents that contain macros? We heard you! You can now simultaneously view and edit .docm files that are stored on OneDrive.
Edit a PDF
You asked for it! You can now open a PDF, convert it to a Word document, and start editing.