Microsoft has released a list of the features that won’t be a part of its Outlook 2013.
The features are:
Classic Offline Mode for Microsoft Exchange accounts
Deliver to PST for Exchange accounts
Calendar Publishing to Office.com (PubCal)
VPN and Dialup Settings
Outlook search via the Windows Shell
Journaling
Import/Export to ACT! Contact manager files, Word 97-2003 (.doc),Excel 97-2003 (.xls),Outlook Express archives
Legacy Contact Linking/Activities Tab