Exchange 2010 SP3 UR5 & Exchange 2007 SP3 UR13

Are available for download.

Exchange 2010 SP3 UR5: http://www.microsoft.com/en-us/download/details.aspx?id=42001

Exchange 2007 SP3 UR13: http://www.microsoft.com/en-us/download/details.aspx?id=41995