Hi all,
I got exactly the opposite while waiting for my "pass" letter in may. I received a mail saying I was unsuccessful this time and blabla, wrote back straight away and got a call the next morning from the recruitment team telling me it was a mistake and that the email was not for me. Another guy in my group had the same experience. I suggest that your write them an email asking for explanation and to confirm this email was for you.
Stay positive, I'm sure you'll find some sort of solution.
