Is it development to like the new and hate the old? Please use the viewpoint of "connection and development" in philosophy to elaborate.

Not necessarily. The essence of development is that new things replace old things, which is a process in which new things produce and old things die out. It is not clear what "new" and "old" mean in "liking the new but hating the old". You should know that new things are not necessarily new things, such as so-called computer fortune telling and scientific fortune telling. Although it sounds new, it's all superstitious old things.