OP, got an update? I checked the linked status page and it says they are still processing. I understand they are supposed to respond by a deadline, and surely it has passed by now!
They missed it. I've mailed 2 letters asking them on the status with no response. I even put a tracking sticker on one of them and it DID get there alright.
There's been a couple of congressional hearings allright - the number of documents mentioning bitcoin within the FBI has probably skyrocketed by now, and the same with all other 3-letter organizations.
Funny thing is though. The law doesn't mean jack shit when it comes to a branch of the government breaking it. If your request is not priortized, it could just as well've been sent to /dev/null. In fact I think that sending a request directly to /dev/null is often more efficient, because then you have with 100% certainty established the fact that you won't ever get an answer.