In addition to the previously released Service Pack 1 for Office 2010, SP1 for Business Contact Manager 2010 has now also been released.
No details about improvements and changes have been made available other than that it includes previously public updates but also previously unreleased fixes and improvements.
Download: Service Pack 1 for BCM 2010 (KB2553006) 32-bit Edition
Download: Service Pack 1 for BCM 2010 (KB2553006) 64-bit Edition
View: Description of Business Contact Manager for Outlook 2010 SP1 (KB2553006)