This will come 15th January 2013 7am New Zealand time.
Internet Explorer 9 and Internet Explorer 10 are not affected.
For those who don't know "out-of-band" it means out of the usual cycle of "second Tuesday of the month Windows Update releases" (second Wednesday of the month New Zealand time). Microsoft only releases out-of-band updates for security issues that need immediate attention.
Windows Update should automatically install this if enabled.