The cycle will come when the government throws some regulations at it. We can expect some of that next year. Besides that its going to a whole pack of EVERYONE trying to get a piece of Bitcoin's a$$.

Also, there is a risk of the economy crashing and that will have an impact on Bitcoin (negative or positive unknown).

The halvings and other known issues will not cause a cycle since the market is far more mature now and will already price that in in a stable manner.