Update: Please not that Exchange 2010 SP3 adds support for coexistence with Exchange 2013 Cumulative Update 1 (will be released in Q1 2013). Text below changed to reflect that.
It’s been a evening full of updates! It seems like Microsoft saved the best for last since Exchange 2010 Service Pack 3 was released minutes ago (just beaten by Update Rollup 10 for Exchange 2007 SP 3 and Update Rollup 6 for Exchange 2010 SP2).
The big news in Exchange 2010 Service Pack 3 is of course the ability to coexist with Exchange 2013 CU1 but let’s not forget the support for running Exchange 2010 on Windows Server 2012 witch can save a bit of money running a DAG. As mentioned above Exchange 2013 CU1 will be released in Q1 and it’s the first out of the new update model for Exchange 2013.
I suggest you take a good look at the Release Notes for Service Pack 3 but I would like to point out the following:
I will be back with more info on how to upgrade and coexistence soon!