Looks like it was re-released. http://support.microsoft.com/kb/2986475
From: [email protected] [mailto:[email protected]] On Behalf Of Michael B. Smith Sent: Wednesday, December 10, 2014 3:02 PM To: [email protected] Subject: [Exchange] Exchange 2010 SP3 UR8 withdrawn... If you have plans to install it - change those plans until a re-release. If you already installed it, you are recommended to revert to SP3 UR7. Exchange Team blog post expected Real Soon Now.
