I found this info on Microsoft's support page explaining Update Rollup A. on that page it is hinting on an update rollup in November (Which might be Update Rollup B). here is the link:
Look under "Known Issues"
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Posted 18 October 2013 - 17:41
Interesting, but I think it's too soon, though who knows? With the talk of a minor GDR like update to the OS in Spring 2014 I wouldn't be surprised if they push out another GA rollup before then at the most.