Service Pack 1 for Exchange 2010 is now available.
Aside from including all the updates up until Exchange 2010 Update Rollup 4, Service Pack 1 also contains various new functionalities including the often requested option to set the archive mailbox of a user to a different database than the main mailbox.
Download: Exchange 2010 Service Pack 1
View: Release Notes for Exchange Server 2010 SP1
View: What’s New in Exchange Server 2010 SP1
