I have been seeing the "To be announced" message on all of the boxes (one DCT3416 & two DCT700) in the house ever since ~June 30th, 2013. I was hoping it would fix itself eventually but apparently that's not the case.
I've tried rebooting all three boxes (leaving the power unplugged for over 1 minute before I plug the power back), and that didn't fix this problem either. I've also tried unscrewing the coaxial cable at the back of the boxes then screwing it back to see if that fixes the issue, but apparently not.
Any other suggestions?