I see this question pop up quite frequently, and honestly I think there won't be a 3.66 JB, the security that Sony has now is too strong in my opinion.
I think that there should be a sticky at the top of this section saying that there is currently no Jailbreak or CFW for anything above 3.55. It would keep this section much cleaner and help the people that don't know.
tbh i think that there will be a jb but not just yet or there will be a downgrade 4 defo and it depend where this work that gitbrew is working on with 3.6 and over and he will defo realize so