What is the next item? Here are possible answers (but you don't need to look at them to figure it out):
Two answers have pointed out to me that the solution is obvious, and can be explained with a simple pattern. So I will try to add another restriction to help you find the rules I had intended:
Find the rules that explain the transition from any state to the next, without knowing the other states.
I realize this restriction makes the puzzle a bit weird. I apologize.