Let's suppose someone asked someone a question or made a proposal sometime ago and is still waiting for a reply. Is it idiomatic to ask "Will the (an) answer be?" meaning that he or she wants to know if the person will provide an answer to the question or the proposal?
By the way, I know we can say "What will the answer be?" meaning that we are interested whether it is yes or no, but may we ask "Will the (an) answer be?" if we want to know whether the answer will be provided at all?