I came across a whitepaper from Quest describing the best practices for migrating to and managing Exchange 2010. The document covers the following topics:

  • Exchange Server 2010: what's new
  • Best practices: planning and preparing for your migration
  • Planning and preparing your migration with Quest tools
  • Migrating to Exchange 2010 with native tools
  • Migrating to Exchange 2010 with Quest tools
  • Best practices for managing Exchange Server 2010

Download it from here