8th January 2013 will be the last day of Microsoft support for Microsoft Exchange 2010 Service Pack 1.
So if you still have installed Service Pack 1 it’s time and good reason to install Service Pack 2
Service Pack 1 for Microsoft Exchange 2010 was released 8/23/2010.
You can check LifeCycle for Microsoft Exchange 2010 product on Microsoft Support Website:
As you can see there isn’t specified date for end of support for Microsoft Exchange 2010 Service Pack 2.
When Microsoft will ship SP3 for Exchange 2010 then you should check again when support will end for SP2.
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