See my theory is the eyepatch lady looks like she's looking through a prison cell window. And I remember in the first episode in the last series there was a prison inside a crack in Amy's wall. And of course the creature that escaped from that prison also told the Doctor that The Silence were coming... Yeah, I'm not sure where I'm going with that either...
Anyhooo... timelord child in the previous episode?
Makes me think that Snagprophet was right that River Song is a closet timelord and perhaps... PERHAPS... the timelord child is her? I also had a theory that Amy's child (if it exists) might be River Song.
I like the fact that The Doctors 200 year-older version that gets killed is still Matt Smith as well...