There is a good chance warhammer will be canceled...THQ stock has been absolutely hammered lately and in short they have massive debt and are struggling financially. Id be surprised if they continued development of warhammer. Their market cap currently is only 48 million.....warhammer is estimated to cost them 50 million in development + 10 million a year....its just so unlikely.
Sadly I'd expect them to drop warhammer and focus on new IPs. They could get bought though and if that did happen whoever bought them could continue with warhammer so you never know.