Updated: 2007-05-10
You can take advantage of a richer feature set in Outlook by using Microsoft Office Outlook 2007 with the latest version of Microsoft Exchange Server. Features of Office Outlook 2007 that work better with Microsoft Exchange 2007 include scheduling meetings, Offline Address Book (OAB) downloads, automatic configuration of Exchange server accounts, and enhanced Out of Office functionality.
The Outlook 2007 and Exchange 2007: Even Better Together PowerPoint presentation describes how the features of Office Outlook 2007 and Exchange 2007 work even better when they are used together.