What happens if I upgrade to IOS 6 and my iPhone is jailbroken?

Hi I'm running on IOS 5.1.1 and my phone is jailbroken. I want to upgrade to IOS 6 but I don't want to unjailbreak my phone. I would do the download from my phone an not a computer. So would cydia and installaous and all that be deleted or just not able to boot up? Thanks ps I have siri which I got from cydia and I wanna know if that will be gone? Or just not work?

It will be deleted, I know ios 6 is really cool but I suggest you to stick with ios 5.1.1 for now and later get is 6 just like me iknow so many people that aren't willin to update yet.