Exchange Server 2013 RTM CU1 on nyt ladattavissa:
http://www.microsoft.com/en-us/download/details.aspx?id=38176

Päivityksestä tarkemmin:
http://blogs.technet.com/b/exchange/archive/2013/04/02/released-exchange-server-2013-rtm-cumulative-update-1.aspx