Adds @mention tagging for communicating with collaborators in Word and PowerPoint. ($149.99 new for one-time purchase, $99.99/$69.99 annual subscription options, free update).
Improves real-time collaboration with in-app chat capabilities and adds support for SVG files. ($149.99 new for one-time purchase, $99.99/$69.99 annual subscription options, free update)
Outlook gains some calendaring features, and the other apps can open locally synced OneDrive documents from the cloud. ($149.99 new for one-time purchase, $99.99/$69.99 annual subscription options, free update)