I suspect that someone at IB screwed up and sent the quilting message to the wrong group of users. However it is a mistake that should have been caught much much earlier in the process and there is automation that could have prevented this from happening in the first place.

Still, we need IB to step forward and admit the screw up and tell us what happened and what they're going to do to stop it from happening again, or my e-mail account will vanish and they won't be able to send me any more e-mail EVER AGAIN.