I watched it, or at least most of it.
spoilers:end of spoilers
I don't really like that they're making the Doctor come from a different universe, be the origin of Regeneration and the source of the supremacy of the Time Lords. The Doctor is already pretty special, this feels like... well, it feels very Moffat-y but in a bad way.
Also, that ending sequence with the death particle bomb didn't make sense because I couldn't understand why the Doctor wouldn't just pull the trigger and kill them both.