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"
Jump to content
|Topic||Stats||Last action by|
|Looking for a specific GPU ...||
|PlayStation Plus Instant Game Collection: March 2015||
|Why are people buying their consoles? Nielsen survey results||
|Windows 10 Technical Preview||
|SpaceX Raptor: engines for super-rockets (thread 2)||
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.