"Well, I'm about to do another western, a pilot for HBO this fall"

Walter Hill is revealing his excitement about his upcoming task. He is describing a western-style tv show that he is producing for HBO. This is likely a new program that he is developing, instead of a remake of an existing show. He is likely eagerly anticipating the challenge of developing something brand-new and unique for the network. He is likewise likely delighted to be working with HBO, as they are understood for producing top quality television programs. This quote reveals that Walter Hill is enthusiastic about his work and is looking forward to the opportunity to develop something brand-new and exciting for HBO.