If you are a MoblieMe member, Apple requires you to upgrade to the new CalDAV-based MobileMe Calendar by May 5, 2011. Currently neither Entourage nor Outlook for Mac 2011 supports CalDAV. The new move also requires you to have Snow Leopard 10.6 installed and this requires an Intel computer. Apparently if you are still on Leopard, it works with limitations. See these links for additional info:
- MobileMe: Frequently Asked Questions about the new MobileMe Calendar
- Note: on the Apple FAQs, it states Support for Microsoft Outlook with Microsoft Exchange has been added with the new MobileMe Calendar. This is not Outlook for Mac 2011. This is Outlook for Windows.
- MobileMe: Using Mac OS X Leopard v10.5.x with the new MobileMe Calendar
- Adam C. Engst’s article on TidBITS Upgrade to MobileMe Calendar by 5 May 2011 for additional info.