See this FAQ. Yes, there will be children, but as mentioned in Cerberus' post, the devs have also said it probably won't be possible to kill them (because it would get the game banned in some places). So I don't know exactly how they're going to handle it.
My personal view is that it should be possible (with appropriate consequences), but I do understand that Warhorse actually want to be able to sell the game. I'd also rather have non-killable children than no children at all.