After a long discussion in another thread about how effective CEAC updates are, I would like to say that, as already mentioned by a multitude of posters, I'm afraid the updates are of limited use.
I had two updates after the creation of my case file on September 12th:
- First update was September 30th - presumably when the embassy received my file from NVC.
- Second update was on October 8th - 5 days after my medical appointment.
Today, October 21st, I received my interview date: November 6th.
So, in my opinion, the lesson to be learnt is that please don't spend too much time getting worked up about updates, or lack thereof, I've seen people have several with no interview date thus far, and I had a measly two before receiving an interview date.
Sit back, try to relax, and just let the embassy do their thing - they will be trying their best.
All the best and good luck,