Patch 3.1 isn't going to be fixing any quest bugs at all. That is a fact.
You can also google "patch 1.3 notes" and read exactly what it will be fixing.
It is only going to be fixing what 1.2 broke.
1.1 fixed some very minor quest bugs, but nothing significant.
It has been confirmed by Bethesda that the first quest fixing patch will come in January, and it will be specifically geared towards quest bugs, primarily.
I am sorry about your luck.
I am playing on the 360 patch-free, and avoiding all quests and not downloading any patches until next month or later.