The long wait is over just for the holiday season. You can download the service pack here:
http://www.microsoft.com/download/en/details.aspx?id=28190
· General information: http://blogs.technet.com/b/exchange/archive/2011/05/17/announcing-exchange-2010-service-pack-2.aspx
· Support for hosting: http://blogs.technet.com/b/exchange/archive/2011/08/30/exchange-server-2010-sp2-and-support-for-hosting-exchange.aspx