here is my take based on some posts i read on this forum. CIC is not treating Oct 11 signed date as a strict cutover date. In other words, if someone sent old forms with signed date of Oct 11-12, they are processing it under old rules (as long you have completed 1460 or whatever days which was the old rule). Basically giving the people the benefit of doubt that they may have forgotten/ missed getting the updated forms. This is very understandable if thats the case.
so my advice will be let your application, dont do anything unless CIC gets back to you. I dont you care whether its under old or new rules, as long as you get citizenship.