Office for Mac team posted an update to users queries about the "Calendar sync support in Outlook for Mac."
"We understand that calendar syncing across devices and applications is very important and hope this post will add more clarity to where we're headed with calendar syncing across devices (via Sync Services), apps and web calendars.
We built Outlook for Mac as a personal information manager for users to manage their email, tasks, contacts and calendar. In the development of Outlook for Mac our goal was to make it the most reliable client for Exchange users and we feel we've done that."
Here's a chart of some common scenarios to and the level of sync support today:
"We still have work to do for customers not on Exchange and encourage you to read on for details," stated Mac Office team.