Submitting CommonApp before December ACT results come out?

Most of the universities I’ve applied stated that their deadline is 01/01/2016. And so I’ve submitted mine today, where I’ve reported my September ACT results. However I’m still waiting for my December ACT results. Am I supposed to report my scores later? How will the college which has already received my application view the new results?

You submit your app, and send your scores later.