Hi All :
Exchange Server 2010 SP2 is released at Dec.4 , you can through this link to download : http://www.microsoft.com/download/en/details.aspx?id=28190
Exchange Server 2010 SP2 is including much anticipated features such as the Hybrid Configuration Wizard , Address Book Policies , Mini version of Outlook Web App , Cross-Site Silent Redirection , Mailbox auto-mapping and so on .
As we did with SP1 , Service Pack 2 is a fully slipstreamed version of Exchange with 13 server languages and 66 client languages (including English) avaliable in a single package . There is no separate download for client and server lanaguages ; you'll only need to download and install separate language packs if you have Unified Messaging.
Exchange 2010 SP2 includes the changes made in the all Exchange 2010 SP1 rollups (1 - 6).
More details , you can reference this link : What's New in Exchange Server 2010 SP2
Exchange 2010 SP2 version is 14.2 (Build 247.5)