Microsoft confirmed Monday that Windows 8 users who upgrade the Calendar app will no longer be able to synchronize that schedule with the calendar included with Google Apps for Business, Academic or Government. From Computerworld:

"Google's paying customers and those with business accounts will not be able to sync their calendars in the [Calendar] app update," a Microsoft spokeswoman said Monday.

Calendar was one of three "Modern" UI (user interface) apps that Microsoft just upgraded for Windows 8 and Windows RT. The same day, The Verge reported that the updated Calendar app would not sync with Google Calendar.

 Microsoft confirms it's shut off Windows 8-Google Apps calendar sync