I just noticed that on my US Airways account page, it now has a little symbol indicating that I am subscribed for TSA Pre-Check. I don't remember seeing this before, and think it might be new today.
Same here. Though, I generally fly out of BOS/MHT (two airports where I don't recall seeing anything for PreCheck). I wonder if it's happening for all higher level elites.
Though, when you click on the "learn more" button, it mentions that you'll receive an e-mail. I haven't received any such e-mail yet.