Only if Firefox is set to download updates automatically. That option can be turned off. Please don't give advice like that unless you know how the person's computer is set up.
brytlea -- in Firefox, go to Help -> Check for Updates, and see what it tells you. If it says no new updates are available, you're up-to-date. Otherwise, you might need to download an update.
Thank you. It did update this morning, I just didn’t know that covered this.