Not Enough Gun said:
I have a feeling (that I'm hopefully wrong about because it would be stupid and extremely signposted if I'm right) that the Doctor who we saw die was a Ganger. Or maybe his change in wardrobe every couple of episodes since the show came back will have something to do with it.
If he was a ganger, he's have dissolved, wouldn't he? And if he was to be a ganger, there'd have been no reason for the writers to kill off his first ganger. They could have just left his fate ambiguous.
River won't die, because she already died in season 4 (the River now being from earlier in her timeline), she'll be put in the stormcage where we first saw her in season 5, maybe "the good man" she said she killed was someone important to the Silence and the anglican marines.
Maybe the Doctor gets kind of saved, and regenerates, ergo technically being killed. I'm sure River would regret that, and she gets jailed for doing a botched job. What I want to know is why that church army sect were friendly towards the doctor in that weeping angels episode. (Granted, it's been a while so I'm probably forgetting something simples.)
I say the Question that the Silence are searching for the answer to will be set up as the big mystery for season 7, and the Doctor will get a new hat.
We can only hope. I, personally love that quirk, as I collect hats myself. And weapons, which I'm sure he wouldn't approve of. I do have the David Tennant coat though... therefor... "Hello, I'm the Doctor!"