Before restoring, or updating your OS, be sure to empty any Categories folders that you may have.
Lol jeez where do I go to do that? I'm honestly just fine w/ losing my jailbreak as long as I'd be able to update on Friday and have my phone not be damaged.
This only applies if you have Categories installed. If you don't then don't sweat it. If you don't know what it is, you probably don't have it installed.
It won't "break" anything, but it may cause the White Apple Logo of Death, necessitating another restore.
P.S. This precautionary steps applies whether or not you plan to jailbreak the new OS. Also, if you don't plan to jailbreak in the future, disable the battery percentage display, if it is enabled, and undo Make It Mine, if you have that installed.
I recently Jailbroke my phone and with the new update coming out I'm kind of worried. If I just let my phone update through Apple will it get bricked? If so, how do I back up my files so that I can restore?
...What precautionary step are you referring to?
And I don't believe I have Make it Mine
...but what purpose does disabling the battery graphic serve? Or is the percentage thing you're talking about an actual number graphic that shows up rather than the normal picture...?