If you don’t already know, the first public beta of Exchange 2010 SP1 is now up for download. Although it must not be installed into production environments it’s defiantly worth a look due to some of the improvements brought to the table:

• Better setup experience including integrated pre-req installer and setup resumes where you let off after a reboot
• Improvements to the Exchange Management Console when managing DAGs
• Improvements to public folder management
• Import and Export of PST files without Outlook installed on the server
• Calendar sharing improvements including iCal sharing
• OWA themes and another OWA overhaul

More links to articles are available over on the Technet Wiki and SP1 beta’s available for download here.